Quadrillion

A quadrillion is equal to 1,000,000,000,000,000.

Scale

 * It takes Niagara Falls 210 years for a quadrillion gallons of water to go down.
 * The Great Lakes have a volume of about 6 quadrillion gallons.
 * The universe is about 473 quadrillion seconds old.
 * The diameter of the Milky Way is about 586 quadrillion miles.
 * SI Prefix: peta-
 * SI Reciprocal Prefix: femto-