80971939584 has 108 divisors (see below), whose sum is σ = 233933245000. Its totient is φ = 26936174592.

The previous prime is 80971939577. The next prime is 80971939681. The reversal of 80971939584 is 48593917908.

80971939584 is a `hidden beast` number, since 8 + 0 + 9 + 7 + 19 + 39 + 584 = 666.

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, 1114482 + ... + 1184910.

Almost surely, 2^80971939584 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80971939584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116966622500).

80971939584 is an abundant number, since it is smaller than the sum of its proper divisors (152961305416).

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

80971939584 is a wasteful number, since it uses less digits than its factorization.

80971939584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70950 (or 70933 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 80971939584 in words is "eighty billion, nine hundred seventy-one million, nine hundred thirty-nine thousand, five hundred eighty-four".