Perfect Square
18720191467047009435032121025 is a perfect square (136821750708895 × 136821750708895)
18720191467047009435032121025 is a perfect square (136821750708895 × 136821750708895)
18720191467047009435032121025 is odd
Previous odd number is 18720191467047009435032121023
Next odd number is 18720191467047009435032121027
1111000111110011111010101111001110010101010110010100111100110110011000111110100110111011000001
6560408142275631978587020774053216635817827817229979656651530008572089630144301890625