91666886159 has 2 divisors, whose sum is σ = 91666886160. Its totient is φ = 91666886158.

The previous prime is 91666886089. The next prime is 91666886191. The reversal of 91666886159 is 95168866619.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91666886159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91666886095 and 91666886104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91666886459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45833443079 + 45833443080.

It is an arithmetic number, because the mean of its divisors is an integer number (45833443080).

Almost surely, 2^91666886159 is an apocalyptic number.

91666886159 is a deficient number, since it is larger than the sum of its proper divisors (1).

91666886159 is an equidigital number, since it uses as much as digits as its factorization.

91666886159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33592320, while the sum is 65.

The spelling of 91666886159 in words is "ninety-one billion, six hundred sixty-six million, eight hundred eighty-six thousand, one hundred fifty-nine".