129400323795960 has 256 divisors, whose sum is σ = 462541476418560. Its totient is φ = 28344291655680.

The previous prime is 129400323795959. The next prime is 129400323796069. The reversal of 129400323795960 is 69597323004921.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 129400323795894 and 129400323795903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31882921 + ... + 35711640.

It is an arithmetic number, because the mean of its divisors is an integer number (1806802642260).

Almost surely, 2^{129400323795960} is an apocalyptic number.

129400323795960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129400323795960 is an abundant number, since it is smaller than the sum of its proper divisors (333141152622600).

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

129400323795960 is a wasteful number, since it uses less digits than its factorization.

129400323795960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67594678 (or 67594674 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 129400323795960 in words is "one hundred twenty-nine trillion, four hundred billion, three hundred twenty-three million, seven hundred ninety-five thousand, nine hundred sixty".