80972525568 has 416 divisors, whose sum is σ = 254301062400. Its totient is φ = 22649241600.

The previous prime is 80972525489. The next prime is 80972525573. The reversal of 80972525568 is 86552527908.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105295488 + ... + 105296256.

Almost surely, 2^80972525568 is an apocalyptic number.

80972525568 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80972525568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127150531200).

80972525568 is an abundant number, since it is smaller than the sum of its proper divisors (173328536832).

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

80972525568 is a wasteful number, since it uses less digits than its factorization.

80972525568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 57.

The spelling of 80972525568 in words is "eighty billion, nine hundred seventy-two million, five hundred twenty-five thousand, five hundred sixty-eight".