Perfect Square
198990781152633054506250000 is a perfect square (14106409222500 × 14106409222500)
198990781152633054506250000 is a perfect square (14106409222500 × 14106409222500)
10100100 10011001 11101111 11011100 10001100 00101000 00000111 01110011 10100111 11101111 00010000
198990781152633054506250000 is even
Previous even number is 198990781152633054506249998
Next even number is 198990781152633054506250002
7879503824012807915669351746958699002187968801945452253261962890625000000000000