91716705233 has 2 divisors, whose sum is σ = 91716705234. Its totient is φ = 91716705232.

The previous prime is 91716705221. The next prime is 91716705239. The reversal of 91716705233 is 33250761719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87469837009 + 4246868224 = 295753^2 + 65168^2 .

It is a cyclic number.

It is not a de Polignac number, because 91716705233 - 2⁴ = 91716705217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (91716705239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45858352616 + 45858352617.

It is an arithmetic number, because the mean of its divisors is an integer number (45858352617).

Almost surely, 2^91716705233 is an apocalyptic number.

It is an amenable number.

91716705233 is a deficient number, since it is larger than the sum of its proper divisors (1).

91716705233 is an equidigital number, since it uses as much as digits as its factorization.

91716705233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 91716705233 in words is "ninety-one billion, seven hundred sixteen million, seven hundred five thousand, two hundred thirty-three".