91059092065 has 48 divisors (see below), whose sum is σ = 114637251456. Its totient is φ = 69389049600.

The previous prime is 91059092053. The next prime is 91059092093. The reversal of 91059092065 is 56029095019.

It is not a de Polignac number, because 91059092065 - 2⁹ = 91059091553 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131778370 + ... + 131779060.

It is an arithmetic number, because the mean of its divisors is an integer number (2388276072).

Almost surely, 2^91059092065 is an apocalyptic number.

It is an amenable number.

91059092065 is a deficient number, since it is larger than the sum of its proper divisors (23578159391).

91059092065 is a wasteful number, since it uses less digits than its factorization.

91059092065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 46.

The spelling of 91059092065 in words is "ninety-one billion, fifty-nine million, ninety-two thousand, sixty-five".