91113864679 has 2 divisors, whose sum is σ = 91113864680. Its totient is φ = 91113864678.

The previous prime is 91113864641. The next prime is 91113864707. The reversal of 91113864679 is 97646831119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91113864679 - 2¹⁵ = 91113831911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91113864979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45556932339 + 45556932340.

It is an arithmetic number, because the mean of its divisors is an integer number (45556932340).

Almost surely, 2^91113864679 is an apocalyptic number.

91113864679 is a deficient number, since it is larger than the sum of its proper divisors (1).

91113864679 is an equidigital number, since it uses as much as digits as its factorization.

91113864679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The spelling of 91113864679 in words is "ninety-one billion, one hundred thirteen million, eight hundred sixty-four thousand, six hundred seventy-nine".