91162913099 has 2 divisors, whose sum is σ = 91162913100. Its totient is φ = 91162913098.

The previous prime is 91162913089. The next prime is 91162913147. The reversal of 91162913099 is 99031926119.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91162913099 - 2⁸ = 91162912843 is a prime.

It is not a weakly prime, because it can be changed into another prime (91162913089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45581456549 + 45581456550.

It is an arithmetic number, because the mean of its divisors is an integer number (45581456550).

Almost surely, 2^91162913099 is an apocalyptic number.

91162913099 is a deficient number, since it is larger than the sum of its proper divisors (1).

91162913099 is an equidigital number, since it uses as much as digits as its factorization.

91162913099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 50.

The spelling of 91162913099 in words is "ninety-one billion, one hundred sixty-two million, nine hundred thirteen thousand, ninety-nine".