91135672379 has 2 divisors, whose sum is σ = 91135672380. Its totient is φ = 91135672378.

The previous prime is 91135672247. The next prime is 91135672429. The reversal of 91135672379 is 97327653119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91135672379 - 2²⁸ = 90867236923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91135672379.

It is not a weakly prime, because it can be changed into another prime (91135671379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45567836189 + 45567836190.

It is an arithmetic number, because the mean of its divisors is an integer number (45567836190).

Almost surely, 2^91135672379 is an apocalyptic number.

91135672379 is a deficient number, since it is larger than the sum of its proper divisors (1).

91135672379 is an equidigital number, since it uses as much as digits as its factorization.

91135672379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The spelling of 91135672379 in words is "ninety-one billion, one hundred thirty-five million, six hundred seventy-two thousand, three hundred seventy-nine".