91766851675 has 12 divisors (see below), whose sum is σ = 113800368096. Its totient is φ = 73407370400.

The previous prime is 91766851639. The next prime is 91766851703. The reversal of 91766851675 is 57615866719.

It is a de Polignac number, because none of the positive numbers 2^k-91766851675 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166665 + ... + 459685.

It is an arithmetic number, because the mean of its divisors is an integer number (9483364008).

Almost surely, 2^91766851675 is an apocalyptic number.

91766851675 is a deficient number, since it is larger than the sum of its proper divisors (22033516421).

91766851675 is a wasteful number, since it uses less digits than its factorization.

91766851675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305558 (or 305553 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 61.

The spelling of 91766851675 in words is "ninety-one billion, seven hundred sixty-six million, eight hundred fifty-one thousand, six hundred seventy-five".