91224017216963 has 2 divisors, whose sum is σ = 91224017216964. Its totient is φ = 91224017216962.

The previous prime is 91224017216953. The next prime is 91224017216999. The reversal of 91224017216963 is 36961271042219.

It is a weak prime.

It is an emirp because it is prime and its reverse (36961271042219) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91224017216963 is a prime.

It is not a weakly prime, because it can be changed into another prime (91224017216953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45612008608481 + 45612008608482.

It is an arithmetic number, because the mean of its divisors is an integer number (45612008608482).

Almost surely, 2^{91224017216963} is an apocalyptic number.

91224017216963 is a deficient number, since it is larger than the sum of its proper divisors (1).

91224017216963 is an equidigital number, since it uses as much as digits as its factorization.

91224017216963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 91224017216963 in words is "ninety-one trillion, two hundred twenty-four billion, seventeen million, two hundred sixteen thousand, nine hundred sixty-three".