129139113128858 has 16 divisors (see below), whose sum is σ = 221382107687040. Its totient is φ = 55345141474416.

The previous prime is 129139113128747. The next prime is 129139113128867. The reversal of 129139113128858 is 858821311931921.

It is a self number, because there is not a number n which added to its sum of digits gives 129139113128858.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11858366 + ... + 19972457.

It is an arithmetic number, because the mean of its divisors is an integer number (13836381730440).

Almost surely, 2^{129139113128858} is an apocalyptic number.

129139113128858 is a deficient number, since it is larger than the sum of its proper divisors (92242994558182).

129139113128858 is a wasteful number, since it uses less digits than its factorization.

129139113128858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32120621.

The product of its digits is 7464960, while the sum is 62.

The spelling of 129139113128858 in words is "one hundred twenty-nine trillion, one hundred thirty-nine billion, one hundred thirteen million, one hundred twenty-eight thousand, eight hundred fifty-eight".