91241373239 has 2 divisors, whose sum is σ = 91241373240. Its totient is φ = 91241373238.

The previous prime is 91241373187. The next prime is 91241373259. The reversal of 91241373239 is 93237314219.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91241373239 is a prime.

It is a super-2 number, since 2×91241373239² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91241373239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91241373259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45620686619 + 45620686620.

It is an arithmetic number, because the mean of its divisors is an integer number (45620686620).

Almost surely, 2^91241373239 is an apocalyptic number.

91241373239 is a deficient number, since it is larger than the sum of its proper divisors (1).

91241373239 is an equidigital number, since it uses as much as digits as its factorization.

91241373239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The spelling of 91241373239 in words is "ninety-one billion, two hundred forty-one million, three hundred seventy-three thousand, two hundred thirty-nine".