Perfect Square
18720204270370003412312733961 is a perfect square (136821797497219 × 136821797497219)
18720204270370003412312733961 is a perfect square (136821797497219 × 136821797497219)
18720204270370003412312733961 is odd
Previous odd number is 18720204270370003412312733959
Next odd number is 18720204270370003412312733963
1111000111110011111101011100101111011100100011000011111110100110110111100011010011100100001001
6560421602888256463764502685411282409940037535934213787528916106896130262380553182681