80985376864 has 72 divisors (see below), whose sum is σ = 192312420048. Its totient is φ = 32881248000.

The previous prime is 80985376763. The next prime is 80985376931. The reversal of 80985376864 is 46867358908.

It is a junction number, because it is equal to n+sod(n) for n = 80985376796 and 80985376805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419887 + ... + 581614.

It is an arithmetic number, because the mean of its divisors is an integer number (2671005834).

Almost surely, 2^80985376864 is an apocalyptic number.

It is an amenable number.

80985376864 is an abundant number, since it is smaller than the sum of its proper divisors (111327043184).

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

80985376864 is a wasteful number, since it uses less digits than its factorization.

80985376864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001556 (or 1001529 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 80985376864 in words is "eighty billion, nine hundred eighty-five million, three hundred seventy-six thousand, eight hundred sixty-four".