91664265214843 has 2 divisors, whose sum is σ = 91664265214844. Its totient is φ = 91664265214842.

The previous prime is 91664265214763. The next prime is 91664265214853. The reversal of 91664265214843 is 34841256246619.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91664265214843 is a prime.

It is not a weakly prime, because it can be changed into another prime (91664265214853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45832132607421 + 45832132607422.

It is an arithmetic number, because the mean of its divisors is an integer number (45832132607422).

Almost surely, 2^{91664265214843} is an apocalyptic number.

91664265214843 is a deficient number, since it is larger than the sum of its proper divisors (1).

91664265214843 is an equidigital number, since it uses as much as digits as its factorization.

91664265214843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59719680, while the sum is 61.

The spelling of 91664265214843 in words is "ninety-one trillion, six hundred sixty-four billion, two hundred sixty-five million, two hundred fourteen thousand, eight hundred forty-three".