81165000308 has 24 divisors (see below), whose sum is σ = 162402241344. Its totient is φ = 34769520000.

The previous prime is 81165000283. The next prime is 81165000317. The reversal of 81165000308 is 80300056118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580853 + ... + 706908.

It is an arithmetic number, because the mean of its divisors is an integer number (6766760056).

Almost surely, 2^81165000308 is an apocalyptic number.

It is an amenable number.

81165000308 is an abundant number, since it is smaller than the sum of its proper divisors (81237241036).

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

81165000308 is a wasteful number, since it uses less digits than its factorization.

81165000308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290023 (or 1290021 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 81165000308 in words is "eighty-one billion, one hundred sixty-five million, three hundred eight", and thus it is an aban number.