80865581016 has 32 divisors (see below), whose sum is σ = 220542494400. Its totient is φ = 24504721440.

The previous prime is 80865580997. The next prime is 80865581039. The reversal of 80865581016 is 61018556808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153154246 + ... + 153154773.

It is an arithmetic number, because the mean of its divisors is an integer number (6891952950).

Almost surely, 2^80865581016 is an apocalyptic number.

It is an amenable number.

80865581016 is an abundant number, since it is smaller than the sum of its proper divisors (139676913384).

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

80865581016 is a wasteful number, since it uses less digits than its factorization.

80865581016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306309039 (or 306309035 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 80865581016 in words is "eighty billion, eight hundred sixty-five million, five hundred eighty-one thousand, sixteen".