115310557991 has 2 divisors, whose sum is σ = 115310557992. Its totient is φ = 115310557990.

The previous prime is 115310557981. The next prime is 115310558047. The reversal of 115310557991 is 199755013511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115310557991 - 2¹⁰ = 115310556967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115310557931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57655278995 + 57655278996.

It is an arithmetic number, because the mean of its divisors is an integer number (57655278996).

Almost surely, 2^115310557991 is an apocalyptic number.

115310557991 is a deficient number, since it is larger than the sum of its proper divisors (1).

115310557991 is an equidigital number, since it uses as much as digits as its factorization.

115310557991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 212625, while the sum is 47.

The spelling of 115310557991 in words is "one hundred fifteen billion, three hundred ten million, five hundred fifty-seven thousand, nine hundred ninety-one".