63320751209 has 2 divisors, whose sum is σ = 63320751210. Its totient is φ = 63320751208.

The previous prime is 63320751149. The next prime is 63320751227. The reversal of 63320751209 is 90215702336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51236586025 + 12084165184 = 226355^2 + 109928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63320751209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63320721209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31660375604 + 31660375605.

It is an arithmetic number, because the mean of its divisors is an integer number (31660375605).

Almost surely, 2^63320751209 is an apocalyptic number.

It is an amenable number.

63320751209 is a deficient number, since it is larger than the sum of its proper divisors (1).

63320751209 is an equidigital number, since it uses as much as digits as its factorization.

63320751209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 63320751209 in words is "sixty-three billion, three hundred twenty million, seven hundred fifty-one thousand, two hundred nine".