80776923892 has 48 divisors (see below), whose sum is σ = 163823790592. Its totient is φ = 34132596480.

The previous prime is 80776923889. The next prime is 80776923947. The reversal of 80776923892 is 29832967708.

It is a super-2 number, since 2×80776923892² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80776923892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8398078 + ... + 8407690.

Almost surely, 2^80776923892 is an apocalyptic number.

It is an amenable number.

80776923892 is an abundant number, since it is smaller than the sum of its proper divisors (83046866700).

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

80776923892 is a wasteful number, since it uses less digits than its factorization.

80776923892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13808 (or 13806 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 80776923892 in words is "eighty billion, seven hundred seventy-six million, nine hundred twenty-three thousand, eight hundred ninety-two".