80571020164 has 12 divisors (see below), whose sum is σ = 141615004300. Its totient is φ = 40109590368.

The previous prime is 80571020137. The next prime is 80571020183. The reversal of 80571020164 is 46102017508.

It can be written as a sum of positive squares in 2 ways, for example, as 76033650564 + 4537369600 = 275742^2 + 67360^2 .

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, 43978899 + ... + 43980730.

Almost surely, 2^80571020164 is an apocalyptic number.

It is an amenable number.

80571020164 is a deficient number, since it is larger than the sum of its proper divisors (61043984136).

80571020164 is a wasteful number, since it uses less digits than its factorization.

80571020164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87959862 (or 87959860 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 80571020164 in words is "eighty billion, five hundred seventy-one million, twenty thousand, one hundred sixty-four".