129118160538 has 48 divisors (see below), whose sum is σ = 304800308160. Its totient is φ = 40507653312.

The previous prime is 129118160513. The next prime is 129118160569. The reversal of 129118160538 is 835061811921.

129118160538 is a `hidden beast` number, since 1 + 2 + 9 + 1 + 1 + 8 + 1 + 605 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 129118160493 and 129118160502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4121206 + ... + 4152417.

It is an arithmetic number, because the mean of its divisors is an integer number (6350006420).

Almost surely, 2^129118160538 is an apocalyptic number.

129118160538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

129118160538 is an abundant number, since it is smaller than the sum of its proper divisors (175682147622).

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

129118160538 is a wasteful number, since it uses less digits than its factorization.

129118160538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273668 (or 8273645 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The spelling of 129118160538 in words is "one hundred twenty-nine billion, one hundred eighteen million, one hundred sixty thousand, five hundred thirty-eight".