Perfect Square
6699129971293369 is a perfect square (81848213 × 81848213)
6,699,129,971,293,369
Six quadrillion, six hundred and ninety-nine trillion, one hundred and twenty-nine billion, nine hundred and seventy-one million, two hundred and ninety-three thousand, three hundred and sixty-nine.
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Odd
6699129971293369 is odd
Previous odd number is 6699129971293367
Next odd number is 6699129971293371