Perfect Square
999999999999999999999999996000000000000000000000000004 is a perfect square (999999999999999999999999998 × 999999999999999999999999998)
999999999999999999999999996000000000000000000000000004 is a perfect square (999999999999999999999999998 × 999999999999999999999999998)
999999999999999999999999996000000000000000000000000004 is even
Previous even number is 999999999999999999999999996000000000000000000000000002
Next even number is 999999999999999999999999996000000000000000000000000006
999999999999999999999999988000000000000000000000000059999999999999999999999999840000000000000000000000000239999999999999999999999999808000000000000000000000000064
999999999999999999999999992000000000000000000000000023999999999999999999999999968000000000000000000000000016
1010 0111 0000 1100 0011 1100 0100 0000 1010 0110 0100 1110 0110 1100 0101 0001 1001 1001 1001 0000 1000 1111 1110 0111 1001 0011 1101 1000 1011 0001 0010 1111 1101 1111 1111 0000 1100 0110 0000 0000 0000 0000 0000 0000 0100
516060742012311633050631441077474475426113757760614000000004