Perfect Square
136821703920561 is a perfect square (11697081 × 11697081)
136,821,703,920,561
One hundred and thirty-six trillion, eight hundred and twenty-one billion, seven hundred and three million, nine hundred and twenty thousand, five hundred and sixty-one.
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Odd
136821703920561 is odd
Previous odd number is 136821703920559
Next odd number is 136821703920563