91426223171 has 2 divisors, whose sum is σ = 91426223172. Its totient is φ = 91426223170.

The previous prime is 91426223153. The next prime is 91426223183. The reversal of 91426223171 is 17132262419.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91426223171 is a prime.

It is not a weakly prime, because it can be changed into another prime (91426222171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45713111585 + 45713111586.

It is an arithmetic number, because the mean of its divisors is an integer number (45713111586).

Almost surely, 2^91426223171 is an apocalyptic number.

91426223171 is a deficient number, since it is larger than the sum of its proper divisors (1).

91426223171 is an equidigital number, since it uses as much as digits as its factorization.

91426223171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The spelling of 91426223171 in words is "ninety-one billion, four hundred twenty-six million, two hundred twenty-three thousand, one hundred seventy-one".