The number 9999999999999999999 is a 19-digit number that is equal to 9 quintillion, 999 quadrillion, 999 trillion, 999 billion, 999 million, 999 thousand, and 999. In mathematical terms, it is represented as 9 x 10^18 - 1. This number is one less than 10 quintillion, which is the next whole number when counting by powers of 10.
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Nine quintillion, nine hundred ninety-nine quadrillion, nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine.
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2 x 10^19
as equal as, so equal as, more equal than, the most equal of.
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The two are equal.
No. A rectangle has four equal angles, but the sides are not all equal.