91064796269 has 2 divisors, whose sum is σ = 91064796270. Its totient is φ = 91064796268.

The previous prime is 91064796217. The next prime is 91064796349. The reversal of 91064796269 is 96269746019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45897920644 + 45166875625 = 214238^2 + 212525^2 .

It is a cyclic number.

It is not a de Polignac number, because 91064796269 - 2⁸ = 91064796013 is a prime.

It is a super-2 number, since 2×91064796269² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91064796169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45532398134 + 45532398135.

It is an arithmetic number, because the mean of its divisors is an integer number (45532398135).

Almost surely, 2^91064796269 is an apocalyptic number.

It is an amenable number.

91064796269 is a deficient number, since it is larger than the sum of its proper divisors (1).

91064796269 is an equidigital number, since it uses as much as digits as its factorization.

91064796269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 91064796269 in words is "ninety-one billion, sixty-four million, seven hundred ninety-six thousand, two hundred sixty-nine".