Perfect Square
262144000000000000000000000000000000000000 is a perfect square (512000000000000000000 × 512000000000000000000)
262144000000000000000000000000000000000000 is a perfect square (512000000000000000000 × 512000000000000000000)
262144000000000000000000000000000000000000 is even
Previous even number is 262143999999999999999999999999999999999998
Next even number is 262144000000000000000000000000000000000002
18014398509481984000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
68719476736000000000000000000000000000000000000000000000000000000000000000000000000
110000001001011111001110011110111100100100000111000101011011001101001011100111110001000000000000000000000000000000000000000000000000000000