129502975092 has 24 divisors (see below), whose sum is σ = 302189897856. Its totient is φ = 43165331328.

The previous prime is 129502975073. The next prime is 129502975097. The reversal of 129502975092 is 290579205921.

129502975092 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129502975097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51093 + ... + 511484.

It is an arithmetic number, because the mean of its divisors is an integer number (12591245744).

Almost surely, 2^129502975092 is an apocalyptic number.

129502975092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129502975092 is an abundant number, since it is smaller than the sum of its proper divisors (172686922764).

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

129502975092 is a wasteful number, since it uses less digits than its factorization.

129502975092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581767 (or 581765 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 129502975092 in words is "one hundred twenty-nine billion, five hundred two million, nine hundred seventy-five thousand, ninety-two".