63311807953 has 2 divisors, whose sum is σ = 63311807954. Its totient is φ = 63311807952.

The previous prime is 63311807857. The next prime is 63311807957. The reversal of 63311807953 is 35970811336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50808766464 + 12503041489 = 225408^2 + 111817^2 .

It is a cyclic number.

It is not a de Polignac number, because 63311807953 - 2²⁹ = 62774937041 is a prime.

It is not a weakly prime, because it can be changed into another prime (63311807957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31655903976 + 31655903977.

It is an arithmetic number, because the mean of its divisors is an integer number (31655903977).

Almost surely, 2^63311807953 is an apocalyptic number.

It is an amenable number.

63311807953 is a deficient number, since it is larger than the sum of its proper divisors (1).

63311807953 is an equidigital number, since it uses as much as digits as its factorization.

63311807953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 63311807953 in words is "sixty-three billion, three hundred eleven million, eight hundred seven thousand, nine hundred fifty-three".