91664369323 has 2 divisors, whose sum is σ = 91664369324. Its totient is φ = 91664369322.

The previous prime is 91664369311. The next prime is 91664369333. The reversal of 91664369323 is 32396346619.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91664369323 is a prime.

It is not a weakly prime, because it can be changed into another prime (91664369333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45832184661 + 45832184662.

It is an arithmetic number, because the mean of its divisors is an integer number (45832184662).

Almost surely, 2^91664369323 is an apocalyptic number.

91664369323 is a deficient number, since it is larger than the sum of its proper divisors (1).

91664369323 is an equidigital number, since it uses as much as digits as its factorization.

91664369323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 52.

The spelling of 91664369323 in words is "ninety-one billion, six hundred sixty-four million, three hundred sixty-nine thousand, three hundred twenty-three".