80985478992 has 40 divisors (see below), whose sum is σ = 228231805920. Its totient is φ = 24541054080.

The previous prime is 80985478961. The next prime is 80985479021. The reversal of 80985478992 is 29987458908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76690267 + ... + 76691322.

It is an arithmetic number, because the mean of its divisors is an integer number (5705795148).

Almost surely, 2^80985478992 is an apocalyptic number.

It is an amenable number.

80985478992 is an abundant number, since it is smaller than the sum of its proper divisors (147246326928).

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

80985478992 is a wasteful number, since it uses less digits than its factorization.

80985478992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153381611 (or 153381605 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 69.

The spelling of 80985478992 in words is "eighty billion, nine hundred eighty-five million, four hundred seventy-eight thousand, nine hundred ninety-two".