80687664056 has 32 divisors (see below), whose sum is σ = 151812262800. Its totient is φ = 40204538880.

The previous prime is 80687664011. The next prime is 80687664119. The reversal of 80687664056 is 65046678608.

It is a happy number.

It is a super-2 number, since 2×80687664056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80687663992 and 80687664010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5044151 + ... + 5060121.

Almost surely, 2^80687664056 is an apocalyptic number.

It is an amenable number.

80687664056 is a deficient number, since it is larger than the sum of its proper divisors (71124598744).

80687664056 is a wasteful number, since it uses less digits than its factorization.

80687664056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18119 (or 18115 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 80687664056 in words is "eighty billion, six hundred eighty-seven million, six hundred sixty-four thousand, fifty-six".