128755629904 has 20 divisors (see below), whose sum is σ = 272142581760. Its totient is φ = 58525286240.

The previous prime is 128755629883. The next prime is 128755629913. The reversal of 128755629904 is 409926557821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365782864 + ... + 365783215.

It is an arithmetic number, because the mean of its divisors is an integer number (13607129088).

Almost surely, 2^128755629904 is an apocalyptic number.

It is an amenable number.

128755629904 is an abundant number, since it is smaller than the sum of its proper divisors (143386951856).

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

128755629904 is a wasteful number, since it uses less digits than its factorization.

128755629904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731566098 (or 731566092 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 128755629904 in words is "one hundred twenty-eight billion, seven hundred fifty-five million, six hundred twenty-nine thousand, nine hundred four".