91941014917 has 2 divisors, whose sum is σ = 91941014918. Its totient is φ = 91941014916.

The previous prime is 91941014911. The next prime is 91941014927. The reversal of 91941014917 is 71941014919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79425894276 + 12515120641 = 281826^2 + 111871^2 .

It is a cyclic number.

It is not a de Polignac number, because 91941014917 - 2³ = 91941014909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91941014911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45970507458 + 45970507459.

It is an arithmetic number, because the mean of its divisors is an integer number (45970507459).

Almost surely, 2^91941014917 is an apocalyptic number.

It is an amenable number.

91941014917 is a deficient number, since it is larger than the sum of its proper divisors (1).

91941014917 is an equidigital number, since it uses as much as digits as its factorization.

91941014917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 91941014917 in words is "ninety-one billion, nine hundred forty-one million, fourteen thousand, nine hundred seventeen".