129815000634 has 32 divisors (see below), whose sum is σ = 283427066880. Its totient is φ = 39310887600.

The previous prime is 129815000617. The next prime is 129815000659. The reversal of 129815000634 is 436000518921.

It is a junction number, because it is equal to n+sod(n) for n = 129815000592 and 129815000601.

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, 577762 + ... + 770349.

It is an arithmetic number, because the mean of its divisors is an integer number (8857095840).

Almost surely, 2^129815000634 is an apocalyptic number.

129815000634 is the 192588-th nonagonal number.

129815000634 is an abundant number, since it is smaller than the sum of its proper divisors (153612066246).

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

129815000634 is a wasteful number, since it uses less digits than its factorization.

129815000634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349586.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 129815000634 in words is "one hundred twenty-nine billion, eight hundred fifteen million, six hundred thirty-four", and thus it is an aban number.