Quintillion

The term quintillion can mean two numbers.

• In Canadian and U.S usage, one quintillion is 1,000,000,000,000,000,000, or 10¹⁸. While Britain, Australia and New Zealand traditionally employed the European usage, they have recently largely switched to the U.S. version.
• In traditional European usage, one quintillion is 10³⁰.

See also List of numbers.

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