Perfect Square
81683741086991335681 is a perfect square (9037905791 × 9037905791)
81683741086991335681 is a perfect square (9037905791 × 9037905791)
81683741086991335681 is odd
Previous odd number is 81683741086991335679
Next odd number is 81683741086991335683
1000110110110010110111100011011110101010111000110010100000100000001
545012998420881729532923646360111197149556600115926523626241