129040331904 has 768 divisors, whose sum is σ = 447678000000. Its totient is φ = 36458864640.

The previous prime is 129040331891. The next prime is 129040331909. The reversal of 129040331904 is 409133040921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (129040331909) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 866042422 + ... + 866042570.

Almost surely, 2^129040331904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129040331904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223839000000).

129040331904 is an abundant number, since it is smaller than the sum of its proper divisors (318637668096).

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

129040331904 is a wasteful number, since it uses less digits than its factorization.

129040331904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 129040331904 in words is "one hundred twenty-nine billion, forty million, three hundred thirty-one thousand, nine hundred four".