115451031961 has 2 divisors, whose sum is σ = 115451031962. Its totient is φ = 115451031960.

The previous prime is 115451031937. The next prime is 115451032087. The reversal of 115451031961 is 169130154511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98106141961 + 17344890000 = 313219^2 + 131700^2 .

It is a cyclic number.

It is not a de Polignac number, because 115451031961 - 2⁷ = 115451031833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115451031961.

It is not a weakly prime, because it can be changed into another prime (115451031061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57725515980 + 57725515981.

It is an arithmetic number, because the mean of its divisors is an integer number (57725515981).

Almost surely, 2^115451031961 is an apocalyptic number.

It is an amenable number.

115451031961 is a deficient number, since it is larger than the sum of its proper divisors (1).

115451031961 is an equidigital number, since it uses as much as digits as its factorization.

115451031961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 37.

The spelling of 115451031961 in words is "one hundred fifteen billion, four hundred fifty-one million, thirty-one thousand, nine hundred sixty-one".