91456488317 has 2 divisors, whose sum is σ = 91456488318. Its totient is φ = 91456488316.

The previous prime is 91456488301. The next prime is 91456488491. The reversal of 91456488317 is 71388465419.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80659408036 + 10797080281 = 284006^2 + 103909^2 .

It is a cyclic number.

It is not a de Polignac number, because 91456488317 - 2⁴ = 91456488301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91456488217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45728244158 + 45728244159.

It is an arithmetic number, because the mean of its divisors is an integer number (45728244159).

Almost surely, 2^91456488317 is an apocalyptic number.

It is an amenable number.

91456488317 is a deficient number, since it is larger than the sum of its proper divisors (1).

91456488317 is an equidigital number, since it uses as much as digits as its factorization.

91456488317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 56.

The spelling of 91456488317 in words is "ninety-one billion, four hundred fifty-six million, four hundred eighty-eight thousand, three hundred seventeen".