91080965623243 has 2 divisors, whose sum is σ = 91080965623244. Its totient is φ = 91080965623242.

The previous prime is 91080965623177. The next prime is 91080965623259. The reversal of 91080965623243 is 34232656908019.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91080965623243 - 2³⁷ = 90943526669771 is a prime.

It is not a weakly prime, because it can be changed into another prime (91080965627243) 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, 45540482811621 + 45540482811622.

It is an arithmetic number, because the mean of its divisors is an integer number (45540482811622).

Almost surely, 2^{91080965623243} is an apocalyptic number.

91080965623243 is a deficient number, since it is larger than the sum of its proper divisors (1).

91080965623243 is an equidigital number, since it uses as much as digits as its factorization.

91080965623243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 91080965623243 in words is "ninety-one trillion, eighty billion, nine hundred sixty-five million, six hundred twenty-three thousand, two hundred forty-three".