Definition of


A thousand million millions.

1,000 x 1,000,000 x 1,000,000 = 1,000,000,000,000,000

Which is a 1 followed by 15 zeros

Using scientific notation: 1 × 1015

We could also think of it as a thousand trillions.

(In many non-English speaking countries it means a million million million million, which is a 1 followed by 24 zeros, or 1 × 1024)

Below is a cube made of a million smaller cubes. If each of the small cubes is worth a billion dollars, then the whole cube is worth a quadrillion dollars.
See: Million

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