79961791159 has 2 divisors, whose sum is σ = 79961791160. Its totient is φ = 79961791158.

The previous prime is 79961791139. The next prime is 79961791193. The reversal of 79961791159 is 95119716997.

It is a weak prime.

It is an emirp because it is prime and its reverse (95119716997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79961791159 - 2²⁹ = 79424920247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79961791159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79961791139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39980895579 + 39980895580.

It is an arithmetic number, because the mean of its divisors is an integer number (39980895580).

Almost surely, 2^79961791159 is an apocalyptic number.

79961791159 is a deficient number, since it is larger than the sum of its proper divisors (1).

79961791159 is an equidigital number, since it uses as much as digits as its factorization.

79961791159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9644670, while the sum is 64.

The spelling of 79961791159 in words is "seventy-nine billion, nine hundred sixty-one million, seven hundred ninety-one thousand, one hundred fifty-nine".