It's about five-and-a-half times as big as The Gulf of Mexico.
In other words, 13,590,000,000,000,000,000 liters is 5.583 times the size of The Gulf of Mexico, and the size of The Gulf of Mexico is 0.1791 times that amount.(water volume)
It's about one-one-hundredth as big as Earth's Oceans.
In other words, 13,590,000,000,000,000,000 liters is 0.0097 times the size of Earth's Oceans, and the size of Earth's Oceans is 100 times that amount.(Total water volume of Atlantic, Pacific, Indian, Arctic, and Southern Oceans) (estimated)
Over 97% of the Earth's water is found in the planet's five oceans for a total volume of about 1,400,000,000,000,000,000,000.0 liters. The Pacific Ocean is the largest ocean, covering 165,760,000 sq. km — more than double the area of the Atlantic Ocean at 82,400,000 sq. km.
It's about 3,500 times as big as The Grand Canyon.
In other words, 13,590,000,000,000,000,000 liters is 3,260 times the size of The Grand Canyon, and the size of The Grand Canyon is 0.000307 times that amount.(Coconino County and Mohave Counties, Arizona, near Fredonia and Grand Canyon, Arizona)
It's about 3,500 times as big as an Halley's Comet.
In other words, the size of an Halley's Comet is 0.00029 times 13,590,000,000,000,000,000 liters.(Comet Halley, officially "1P/Halley") (volume calculated based on 2005 dimensions)
It's about 25,000,000 times as big as Sydney Harbour.
In other words, 13,590,000,000,000,000,000 liters is 24,200,000 times the size of Sydney Harbour, and the size of Sydney Harbour is 0.0000000413 times that amount.(formally Port Jackson, a.k.a. Sydney Harbor) (Sydney, New South Wales, Australia) (total estuary water volume at high tide)
It's about 5,500,000,000 times as big as The Great Pyramid of Giza.
In other words, 13,590,000,000,000,000,000 liters is 5,598,089,000 times the size of The Great Pyramid of Giza, and the size of The Great Pyramid of Giza is 0.0000000001786324 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt) (including internal hillock)
It's about 8,000,000,000 times as big as The Melbourne Cricket Ground.
In other words, the size of The Melbourne Cricket Ground is 0.00000000013 times 13,590,000,000,000,000,000 liters.(a.k.a. MCG, a.k.a. "The G") (Yarra Park, melbourne, Victoria, Australia) (internal volume)