91670765516 has 48 divisors (see below), whose sum is σ = 176590592640. Its totient is φ = 41292576000.

The previous prime is 91670765471. The next prime is 91670765533. The reversal of 91670765516 is 61556707619.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4248836 + ... + 4270356.

It is an arithmetic number, because the mean of its divisors is an integer number (3678970680).

Almost surely, 2^91670765516 is an apocalyptic number.

It is an amenable number.

91670765516 is a deficient number, since it is larger than the sum of its proper divisors (84919827124).

91670765516 is a wasteful number, since it uses less digits than its factorization.

91670765516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406 (or 22404 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 53.

The spelling of 91670765516 in words is "ninety-one billion, six hundred seventy million, seven hundred sixty-five thousand, five hundred sixteen".