80640806684 has 6 divisors (see below), whose sum is σ = 141121411704. Its totient is φ = 40320403340.

The previous prime is 80640806669. The next prime is 80640806707. The reversal of 80640806684 is 48660804608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080100832 + ... + 10080100839.

It is an arithmetic number, because the mean of its divisors is an integer number (23520235284).

Almost surely, 2^80640806684 is an apocalyptic number.

It is an amenable number.

80640806684 is a deficient number, since it is larger than the sum of its proper divisors (60480605020).

80640806684 is a wasteful number, since it uses less digits than its factorization.

80640806684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20160201675 (or 20160201673 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 50.

The spelling of 80640806684 in words is "eighty billion, six hundred forty million, eight hundred six thousand, six hundred eighty-four".