80765661992 has 16 divisors (see below), whose sum is σ = 152525083200. Its totient is φ = 40092306480.

The previous prime is 80765661971. The next prime is 80765662009. The reversal of 80765661992 is 29916656708.

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, 36314384 + ... + 36316607.

It is an arithmetic number, because the mean of its divisors is an integer number (9532817700).

Almost surely, 2^80765661992 is an apocalyptic number.

It is an amenable number.

80765661992 is a deficient number, since it is larger than the sum of its proper divisors (71759421208).

80765661992 is a wasteful number, since it uses less digits than its factorization.

80765661992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72631136 (or 72631132 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 80765661992 in words is "eighty billion, seven hundred sixty-five million, six hundred sixty-one thousand, nine hundred ninety-two".