79179928859 has 2 divisors, whose sum is σ = 79179928860. Its totient is φ = 79179928858.

The previous prime is 79179928733. The next prime is 79179928873. The reversal of 79179928859 is 95882997197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79179928859 - 2²⁰ = 79178880283 is a prime.

It is a super-2 number, since 2×79179928859² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79179928159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39589964429 + 39589964430.

It is an arithmetic number, because the mean of its divisors is an integer number (39589964430).

Almost surely, 2^79179928859 is an apocalyptic number.

79179928859 is a deficient number, since it is larger than the sum of its proper divisors (1).

79179928859 is an equidigital number, since it uses as much as digits as its factorization.

79179928859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205752960, while the sum is 74.

The spelling of 79179928859 in words is "seventy-nine billion, one hundred seventy-nine million, nine hundred twenty-eight thousand, eight hundred fifty-nine".