115929609138 has 24 divisors (see below), whose sum is σ = 287063794368. Its totient is φ = 33122745432.

The previous prime is 115929609127. The next prime is 115929609143. The reversal of 115929609138 is 831906929511.

115929609138 is a `hidden beast` number, since 1 + 1 + 5 + 9 + 29 + 609 + 1 + 3 + 8 = 666.

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, 460038006 + ... + 460038257.

It is an arithmetic number, because the mean of its divisors is an integer number (11960991432).

Almost surely, 2^115929609138 is an apocalyptic number.

115929609138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

115929609138 is an abundant number, since it is smaller than the sum of its proper divisors (171134185230).

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

115929609138 is a wasteful number, since it uses less digits than its factorization.

115929609138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920076278 (or 920076275 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The spelling of 115929609138 in words is "one hundred fifteen billion, nine hundred twenty-nine million, six hundred nine thousand, one hundred thirty-eight".