129139008516 has 72 divisors (see below), whose sum is σ = 373286024384. Its totient is φ = 36875321280.

The previous prime is 129139008487. The next prime is 129139008571. The reversal of 129139008516 is 615800931921.

129139008516 is a `hidden beast` number, since 12 + 91 + 39 + 0 + 0 + 8 + 516 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285486 + ... + 582906.

Almost surely, 2^129139008516 is an apocalyptic number.

It is an amenable number.

129139008516 is an abundant number, since it is smaller than the sum of its proper divisors (244147015868).

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

129139008516 is a wasteful number, since it uses less digits than its factorization.

129139008516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299161 (or 299156 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 129139008516 in words is "one hundred twenty-nine billion, one hundred thirty-nine million, eight thousand, five hundred sixteen".