129515752012 has 24 divisors (see below), whose sum is σ = 229062822912. Its totient is φ = 64072650000.

The previous prime is 129515751923. The next prime is 129515752031. The reversal of 129515752012 is 210257515921.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275548 + ... + 578755.

It is an arithmetic number, because the mean of its divisors is an integer number (9544284288).

Almost surely, 2^129515752012 is an apocalyptic number.

It is an amenable number.

129515752012 is a deficient number, since it is larger than the sum of its proper divisors (99547070900).

129515752012 is a wasteful number, since it uses less digits than its factorization.

129515752012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854709 (or 854707 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 129515752012 in words is "one hundred twenty-nine billion, five hundred fifteen million, seven hundred fifty-two thousand, twelve".