Perfect Square
999999992000000019999999984000000004 is a perfect square (999999996000000002 × 999999996000000002)
999999992000000019999999984000000004 is a perfect square (999999996000000002 × 999999996000000002)
11000000 10010111 11001110 01100001 11101111 10010101 00110001 11001010 01010101 11100011 00101110 00011010 00100011 01100000 00000100
999999992000000019999999984000000004 is even
Previous even number is 999999992000000019999999984000000002
Next even number is 999999992000000019999999984000000006
999999976000000251999998480000005819999985216000025375999970432000023279999987840000004031999999232000000064
999999984000000103999999648000000663999999296000000415999999872000000016