128128932084 has 24 divisors (see below), whose sum is σ = 300801669280. Its totient is φ = 42447621024.

The previous prime is 128128932079. The next prime is 128128932091. The reversal of 128128932084 is 480239821821.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 32750839 + ... + 32754750.

Almost surely, 2^128128932084 is an apocalyptic number.

It is an amenable number.

128128932084 is an abundant number, since it is smaller than the sum of its proper divisors (172672737196).

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

128128932084 is a wasteful number, since it uses less digits than its factorization.

128128932084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65505759 (or 65505757 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 128128932084 in words is "one hundred twenty-eight billion, one hundred twenty-eight million, nine hundred thirty-two thousand, eighty-four".