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Number to words

Big numbers

Thousand1,000
103, 3 zeros
Million1,000,000
106, 6 zeros
Billion1,000,000,000
109, 9 zeros
Trillion1,000,000,000,000
1012, 12 zeros

A billion is a thousand million in both US and modern British English. The words go with hyphens between tens and units (forty-two), and British English adds "and" before the last part (one hundred and five).

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