129705392634 has 32 divisors (see below), whose sum is σ = 268460490240. Its totient is φ = 41728008000.

The previous prime is 129705392603. The next prime is 129705392651. The reversal of 129705392634 is 436293507921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306984 + ... + 594684.

It is an arithmetic number, because the mean of its divisors is an integer number (8389390320).

Almost surely, 2^129705392634 is an apocalyptic number.

129705392634 is an abundant number, since it is smaller than the sum of its proper divisors (138755097606).

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

129705392634 is a wasteful number, since it uses less digits than its factorization.

129705392634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290326.

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 129705392634 in words is "one hundred twenty-nine billion, seven hundred five million, three hundred ninety-two thousand, six hundred thirty-four".