91426223179 has 4 divisors (see below), whose sum is σ = 91450876720. Its totient is φ = 91401569640.

The previous prime is 91426223171. The next prime is 91426223183. The reversal of 91426223179 is 97132262419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91426223179 - 2³ = 91426223171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91426223171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12321207 + ... + 12328624.

It is an arithmetic number, because the mean of its divisors is an integer number (22862719180).

Almost surely, 2^91426223179 is an apocalyptic number.

91426223179 is a deficient number, since it is larger than the sum of its proper divisors (24653541).

91426223179 is a wasteful number, since it uses less digits than its factorization.

91426223179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24653540.

The product of its digits is 326592, while the sum is 46.

The spelling of 91426223179 in words is "ninety-one billion, four hundred twenty-six million, two hundred twenty-three thousand, one hundred seventy-nine".