Perfect Square
262143999999999999997952000000000000000004 is a perfect square (511999999999999999998 × 511999999999999999998)
262143999999999999997952000000000000000004 is a perfect square (511999999999999999998 × 511999999999999999998)
262143999999999999997952000000000000000004 is even
Previous even number is 262143999999999999997952000000000000000002
Next even number is 262143999999999999997952000000000000000006
18014398509481983999577787534934016000004123168604159999999978525163520000000000062914559999999999999901696000000000000000064
68719476735999999998926258176000000000006291455999999999999983616000000000000000016
110000001001011111001110011110111100100100000111000101011011001100101111110111011010001010011000101100010011100000000000000000000000000100