129804905752 has 32 divisors (see below), whose sum is σ = 250026815520. Its totient is φ = 63131996160.

The previous prime is 129804905729. The next prime is 129804905759. The reversal of 129804905752 is 257509408921.

It is a self number, because there is not a number n which added to its sum of digits gives 129804905752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129804905759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131352 + ... + 1240792.

It is an arithmetic number, because the mean of its divisors is an integer number (7813337985).

Almost surely, 2^129804905752 is an apocalyptic number.

It is an amenable number.

129804905752 is a deficient number, since it is larger than the sum of its proper divisors (120221909768).

129804905752 is a wasteful number, since it uses less digits than its factorization.

129804905752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491 (or 113487 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 129804905752 in words is "one hundred twenty-nine billion, eight hundred four million, nine hundred five thousand, seven hundred fifty-two".