Perfect Square
72712687847939209009 is a perfect square (8527173497 × 8527173497)
72712687847939209009 is a perfect square (8527173497 × 8527173497)
72712687847939209009 is odd
Previous odd number is 72712687847939209007
Next odd number is 72712687847939209011
111111000100010111010111000101100101110000010001110111011100110001
384441794979608324700142396476566592295198569961111614787729