Correction for the weight of an American Football
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How heavy is 0.00000610 megatonnes?
It's about 15,000 times as heavy as an American Football
The weight of an American Football is about 0.00000000041106808531250 megatonnes.
(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.000000000396893323750 megatonnes and 0.0000000004252428468750 megatonnes. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.