115691931468 has 36 divisors (see below), whose sum is σ = 295338982848. Its totient is φ = 38182154400.

The previous prime is 115691931457. The next prime is 115691931493. The reversal of 115691931468 is 864139196511.

115691931468 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 91 + 93 + 1 + 468 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15905596 + ... + 15912867.

Almost surely, 2^115691931468 is an apocalyptic number.

115691931468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

115691931468 is an abundant number, since it is smaller than the sum of its proper divisors (179647051380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115691931468 is a wasteful number, since it uses less digits than its factorization.

115691931468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31818574 (or 31818569 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The spelling of 115691931468 in words is "one hundred fifteen billion, six hundred ninety-one million, nine hundred thirty-one thousand, four hundred sixty-eight".