80217107656 has 32 divisors (see below), whose sum is σ = 172631571840. Its totient is φ = 34231206528.

The previous prime is 80217107539. The next prime is 80217107671. The reversal of 80217107656 is 65670171208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060876 + ... + 3086971.

It is an arithmetic number, because the mean of its divisors is an integer number (5394736620).

Almost surely, 2^80217107656 is an apocalyptic number.

It is an amenable number.

80217107656 is an abundant number, since it is smaller than the sum of its proper divisors (92414464184).

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

80217107656 is a wasteful number, since it uses less digits than its factorization.

80217107656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148093 (or 6148089 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 80217107656 in words is "eighty billion, two hundred seventeen million, one hundred seven thousand, six hundred fifty-six".