129124769232 has 20 divisors (see below), whose sum is σ = 333572320640. Its totient is φ = 43041589728.

The previous prime is 129124769219. The next prime is 129124769251. The reversal of 129124769232 is 232967421921.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2690099359 = 129124769232 / (1 + 2 + 9 + 1 + 2 + 4 + 7 + 6 + 9 + 2 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345049632 + ... + 1345049727.

It is an arithmetic number, because the mean of its divisors is an integer number (16678616032).

Almost surely, 2^129124769232 is an apocalyptic number.

129124769232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129124769232 is an abundant number, since it is smaller than the sum of its proper divisors (204447551408).

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

129124769232 is a wasteful number, since it uses less digits than its factorization.

129124769232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690099370 (or 2690099364 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The spelling of 129124769232 in words is "one hundred twenty-nine billion, one hundred twenty-four million, seven hundred sixty-nine thousand, two hundred thirty-two".