115388916507 has 6 divisors (see below), whose sum is σ = 166672879412. Its totient is φ = 76925944332.

The previous prime is 115388916493. The next prime is 115388916551. The reversal of 115388916507 is 705619883511.

It is a happy number.

115388916507 is a `hidden beast` number, since 1 + 1 + 53 + 8 + 89 + 1 + 6 + 507 = 666.

It is not a de Polignac number, because 115388916507 - 2¹⁵ = 115388883739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115388916607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6410495353 + ... + 6410495370.

Almost surely, 2^115388916507 is an apocalyptic number.

115388916507 is a deficient number, since it is larger than the sum of its proper divisors (51283962905).

115388916507 is a wasteful number, since it uses less digits than its factorization.

115388916507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12820990729 (or 12820990726 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 115388916507 in words is "one hundred fifteen billion, three hundred eighty-eight million, nine hundred sixteen thousand, five hundred seven".