80139361568 has 24 divisors (see below), whose sum is σ = 180313564032. Its totient is φ = 34345440576.

The previous prime is 80139361537. The next prime is 80139361571. The reversal of 80139361568 is 86516393108.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178882280 + ... + 178882727.

It is an arithmetic number, because the mean of its divisors is an integer number (7513065168).

Almost surely, 2^80139361568 is an apocalyptic number.

It is an amenable number.

80139361568 is an abundant number, since it is smaller than the sum of its proper divisors (100174202464).

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

80139361568 is a wasteful number, since it uses less digits than its factorization.

80139361568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357765024 (or 357765016 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 80139361568 in words is "eighty billion, one hundred thirty-nine million, three hundred sixty-one thousand, five hundred sixty-eight".