91113295919 has 2 divisors, whose sum is σ = 91113295920. Its totient is φ = 91113295918.

The previous prime is 91113295901. The next prime is 91113295921. The reversal of 91113295919 is 91959231119.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91113295919 is a prime.

It is a super-2 number, since 2×91113295919² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 91113295921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91113295519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45556647959 + 45556647960.

It is an arithmetic number, because the mean of its divisors is an integer number (45556647960).

Almost surely, 2^91113295919 is an apocalyptic number.

91113295919 is a deficient number, since it is larger than the sum of its proper divisors (1).

91113295919 is an equidigital number, since it uses as much as digits as its factorization.

91113295919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 50.

The spelling of 91113295919 in words is "ninety-one billion, one hundred thirteen million, two hundred ninety-five thousand, nine hundred nineteen".