80646557712 has 40 divisors (see below), whose sum is σ = 238099361856. Its totient is φ = 23041873536.

The previous prime is 80646557701. The next prime is 80646557713. The reversal of 80646557712 is 21775564608.

It is not an unprimeable number, because it can be changed into a prime (80646557713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120009423 + ... + 120010094.

Almost surely, 2^80646557712 is an apocalyptic number.

It is an amenable number.

80646557712 is an abundant number, since it is smaller than the sum of its proper divisors (157452804144).

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

80646557712 is a wasteful number, since it uses less digits than its factorization.

80646557712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240019535 (or 240019529 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 80646557712 in words is "eighty billion, six hundred forty-six million, five hundred fifty-seven thousand, seven hundred twelve".