91559559167 has 2 divisors, whose sum is σ = 91559559168. Its totient is φ = 91559559166.

The previous prime is 91559559163. The next prime is 91559559193. The reversal of 91559559167 is 76195595519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91559559167 - 2² = 91559559163 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91559559163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45779779583 + 45779779584.

It is an arithmetic number, because the mean of its divisors is an integer number (45779779584).

Almost surely, 2^91559559167 is an apocalyptic number.

91559559167 is a deficient number, since it is larger than the sum of its proper divisors (1).

91559559167 is an equidigital number, since it uses as much as digits as its factorization.

91559559167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19136250, while the sum is 62.

The spelling of 91559559167 in words is "ninety-one billion, five hundred fifty-nine million, five hundred fifty-nine thousand, one hundred sixty-seven".