Perfect Square
81535270744479767798025 is a perfect square (285543815805 × 285543815805)
81535270744479767798025 is a perfect square (285543815805 × 285543815805)
81535270744479767798025 is odd
Previous odd number is 81535270744479767798023
Next odd number is 81535270744479767798027
10001010001000000100100101111101011011011100111000000000100010010000100001001
542046510515654165952668554808411611758844775424966953905816921265625