80791921108188 has 36 divisors (see below), whose sum is σ = 204274164105648. Its totient is φ = 26924028329280.

The previous prime is 80791921108177. The next prime is 80791921108201. The reversal of 80791921108188 is 88180112919708.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275353008 + ... + 275646263.

It is an arithmetic number, because the mean of its divisors is an integer number (5674282336268).

Almost surely, 2^{80791921108188} is an apocalyptic number.

It is an amenable number.

80791921108188 is an abundant number, since it is smaller than the sum of its proper divisors (123482242997460).

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

80791921108188 is a wasteful number, since it uses less digits than its factorization.

80791921108188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551003354 (or 551003349 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 63.

The spelling of 80791921108188 in words is "eighty trillion, seven hundred ninety-one billion, nine hundred twenty-one million, one hundred eight thousand, one hundred eighty-eight".