115512023511 has 8 divisors (see below), whose sum is σ = 171128923760. Its totient is φ = 77008015656.

The previous prime is 115512023503. The next prime is 115512023531. The reversal of 115512023511 is 115320215511.

It is a happy number.

115512023511 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 120 + 23 + 511 = 666.

It is not a de Polignac number, because 115512023511 - 2³ = 115512023503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4278223093 = 115512023511 / (1 + 1 + 5 + 5 + 1 + 2 + 0 + 2 + 3 + 5 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115512023531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139111520 + ... + 2139111573.

It is an arithmetic number, because the mean of its divisors is an integer number (21391115470).

Almost surely, 2^115512023511 is an apocalyptic number.

115512023511 is a deficient number, since it is larger than the sum of its proper divisors (55616900249).

115512023511 is an equidigital number, since it uses as much as digits as its factorization.

115512023511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278223102 (or 4278223096 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 115512023511 in words is "one hundred fifteen billion, five hundred twelve million, twenty-three thousand, five hundred eleven".