80554664864 has 24 divisors (see below), whose sum is σ = 158839450308. Its totient is φ = 40214487040.

The previous prime is 80554664837. The next prime is 80554664867. The reversal of 80554664864 is 46846645508.

It can be written as a sum of positive squares in 2 ways, for example, as 80326896400 + 227768464 = 283420^2 + 15092^2 .

It is a super-2 number, since 2×80554664864² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80554664867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943087 + ... + 1984110.

Almost surely, 2^80554664864 is an apocalyptic number.

It is an amenable number.

80554664864 is a deficient number, since it is larger than the sum of its proper divisors (78284785444).

80554664864 is a wasteful number, since it uses less digits than its factorization.

80554664864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927848 (or 3927840 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 56.

The spelling of 80554664864 in words is "eighty billion, five hundred fifty-four million, six hundred sixty-four thousand, eight hundred sixty-four".