129786338992 has 40 divisors (see below), whose sum is σ = 262608192000. Its totient is φ = 62021087040.

The previous prime is 129786338987. The next prime is 129786339019. The reversal of 129786338992 is 299833687921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309759 + ... + 596257.

It is an arithmetic number, because the mean of its divisors is an integer number (6565204800).

Almost surely, 2^129786338992 is an apocalyptic number.

It is an amenable number.

129786338992 is an abundant number, since it is smaller than the sum of its proper divisors (132821853008).

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

129786338992 is a wasteful number, since it uses less digits than its factorization.

129786338992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287761 (or 287755 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 67.

The spelling of 129786338992 in words is "one hundred twenty-nine billion, seven hundred eighty-six million, three hundred thirty-eight thousand, nine hundred ninety-two".