91324206165 has 16 divisors (see below), whose sum is σ = 147185293248. Its totient is φ = 48350722176.

The previous prime is 91324206143. The next prime is 91324206221. The reversal of 91324206165 is 56160242319.

It is not a de Polignac number, because 91324206165 - 2⁵ = 91324206133 is a prime.

It is a super-2 number, since 2×91324206165² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 22217947 + ... + 22222056.

It is an arithmetic number, because the mean of its divisors is an integer number (9199080828).

Almost surely, 2^91324206165 is an apocalyptic number.

It is an amenable number.

91324206165 is a deficient number, since it is larger than the sum of its proper divisors (55861087083).

91324206165 is a wasteful number, since it uses less digits than its factorization.

91324206165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44440148.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 91324206165 in words is "ninety-one billion, three hundred twenty-four million, two hundred six thousand, one hundred sixty-five".