129636291730 has 64 divisors (see below), whose sum is σ = 266233651200. Its totient is φ = 44987785920.

The previous prime is 129636291721. The next prime is 129636291767. The reversal of 129636291730 is 37192636921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1052311 + ... + 1169029.

It is an arithmetic number, because the mean of its divisors is an integer number (4159900800).

Almost surely, 2^129636291730 is an apocalyptic number.

129636291730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129636291730 is an abundant number, since it is smaller than the sum of its proper divisors (136597359470).

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

129636291730 is a wasteful number, since it uses less digits than its factorization.

129636291730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117199.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 129636291730 in words is "one hundred twenty-nine billion, six hundred thirty-six million, two hundred ninety-one thousand, seven hundred thirty".