80717686139664 has 180 divisors, whose sum is σ = 274203781727616. Its totient is φ = 22059491819904.

The previous prime is 80717686139581. The next prime is 80717686139711. The reversal of 80717686139664 is 46693168671708.

It is a happy number.

80717686139664 is a `hidden beast` number, since 8 + 0 + 7 + 176 + 8 + 6 + 1 + 396 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 80717686139592 and 80717686139601.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 248524264 + ... + 248848839.

Almost surely, 2^{80717686139664} is an apocalyptic number.

80717686139664 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80717686139664 is an abundant number, since it is smaller than the sum of its proper divisors (193486095587952).

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

80717686139664 is a wasteful number, since it uses less digits than its factorization.

80717686139664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497373154 (or 497373138 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 72.

The spelling of 80717686139664 in words is "eighty trillion, seven hundred seventeen billion, six hundred eighty-six million, one hundred thirty-nine thousand, six hundred sixty-four".