129137544475 has 12 divisors (see below), whose sum is σ = 165652299360. Its totient is φ = 99747620000.

The previous prime is 129137544469. The next prime is 129137544517. The reversal of 129137544475 is 574445731921.

It is not a de Polignac number, because 129137544475 - 2²⁹ = 128600673563 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89059651 + ... + 89061100.

It is an arithmetic number, because the mean of its divisors is an integer number (13804358280).

Almost surely, 2^129137544475 is an apocalyptic number.

129137544475 is a deficient number, since it is larger than the sum of its proper divisors (36514754885).

129137544475 is a wasteful number, since it uses less digits than its factorization.

129137544475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178120790 (or 178120785 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The spelling of 129137544475 in words is "one hundred twenty-nine billion, one hundred thirty-seven million, five hundred forty-four thousand, four hundred seventy-five".