91313161373 has 32 divisors (see below), whose sum is σ = 109756588032. Its totient is φ = 74274552000.

The previous prime is 91313161363. The next prime is 91313161451. The reversal of 91313161373 is 37316131319.

It is a cyclic number.

It is not a de Polignac number, because 91313161373 - 2²⁰ = 91312112797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91313161333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23895803 + ... + 23899623.

It is an arithmetic number, because the mean of its divisors is an integer number (3429893376).

Almost surely, 2^91313161373 is an apocalyptic number.

It is an amenable number.

91313161373 is a deficient number, since it is larger than the sum of its proper divisors (18443426659).

91313161373 is a wasteful number, since it uses less digits than its factorization.

91313161373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985.

The product of its digits is 30618, while the sum is 38.

The spelling of 91313161373 in words is "ninety-one billion, three hundred thirteen million, one hundred sixty-one thousand, three hundred seventy-three".