It's about twenty times as heavy as a Chihuahua
In other words, the weight of a Chihuahua is 0.0417 times 0.0000000540 megatonnes.(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 0.000000002250 megatonnes. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about one-thirtieth as heavy as a Car
In other words, 0.0000000540 megatonnes is 0.03269 times the weight of a Car, and the weight of a Car is 30.590 times that amount.(for 2009 Ford Taurus) (curb weight)
A 2009 Ford Taurus weighs 0.0000016520 megatonnes. The first mass-produced car, the Curved Dash Oldsmobile — introduced in 1901 — weighed just 0.0000003860 megatonnes.
It's about one-thirty-fifth as heavy as a Giraffe
In other words, the weight of a Giraffe is 35.70 times 0.0000000540 megatonnes.(Giraffa camelopardalis reticulata) (adult, male, maximum of range)
An adult, male giraffe can weigh up to 0.000001930 megatonnes. Reaching 5.5 m (18 ft) in height by adulthood, giraffe calves can grow as much as 3 cm (1 in) per day.
It's about one-fortieth as heavy as a Rhinoceros
In other words, the weight of a Rhinoceros is 38 times 0.0000000540 megatonnes.(for Black rhinoceros, Diceros bicornis) (Adult, male)
An adult black rhinoceros weighs between 0.00000210 megatonnes. Rhinoceros are extremely aggressive — nearly one of every two males will die as a result of fighting with other rhinoceros.
It's about 40 times as heavy as a Human Brain
In other words, the weight of a Human Brain is 0.025 times 0.0000000540 megatonnes.(adult)
The average weight of an adult human brain is between 0.000000001350 megatonnes. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
It's about one-fiftieth as heavy as The Tongue of a Blue Whale
In other words, the weight of The Tongue of a Blue Whale is 50 times 0.0000000540 megatonnes.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 0.00000270 megatonnes. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.
It's about 55 times as heavy as a liter of Water
In other words, 0.0000000540 megatonnes is 53.998490 times the weight of a liter of Water, and the weight of a liter of Water is 0.01851904 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 0.0000000010000280 megatonnes rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).