128976809104 has 80 divisors (see below), whose sum is σ = 303703686720. Its totient is φ = 52250042880.

The previous prime is 128976809089. The next prime is 128976809113. The reversal of 128976809104 is 401908679821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905562 + ... + 1038265.

It is an arithmetic number, because the mean of its divisors is an integer number (3796296084).

Almost surely, 2^128976809104 is an apocalyptic number.

It is an amenable number.

128976809104 is an abundant number, since it is smaller than the sum of its proper divisors (174726877616).

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

128976809104 is a wasteful number, since it uses less digits than its factorization.

128976809104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943888 (or 1943882 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 128976809104 in words is "one hundred twenty-eight billion, nine hundred seventy-six million, eight hundred nine thousand, one hundred four".