128829978376 has 16 divisors (see below), whose sum is σ = 263515865040. Its totient is φ = 58559081040.

The previous prime is 128829978349. The next prime is 128829978397. The reversal of 128829978376 is 673879928821.

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, 731988426 + ... + 731988601.

It is an arithmetic number, because the mean of its divisors is an integer number (16469741565).

Almost surely, 2^128829978376 is an apocalyptic number.

It is an amenable number.

128829978376 is an abundant number, since it is smaller than the sum of its proper divisors (134685886664).

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

128829978376 is a wasteful number, since it uses less digits than its factorization.

128829978376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463977044 (or 1463977040 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 70.

The spelling of 128829978376 in words is "one hundred twenty-eight billion, eight hundred twenty-nine million, nine hundred seventy-eight thousand, three hundred seventy-six".