79117817169 has 16 divisors (see below), whose sum is σ = 105616280000. Its totient is φ = 52682325696.

The previous prime is 79117817161. The next prime is 79117817173. The reversal of 79117817169 is 96171871197.

It is not a de Polignac number, because 79117817169 - 2³ = 79117817161 is a prime.

It is a super-2 number, since 2×79117817169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79117817161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12227067 + ... + 12233535.

It is an arithmetic number, because the mean of its divisors is an integer number (6601017500).

Almost surely, 2^79117817169 is an apocalyptic number.

It is an amenable number.

79117817169 is a deficient number, since it is larger than the sum of its proper divisors (26498462831).

79117817169 is a wasteful number, since it uses less digits than its factorization.

79117817169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704.

The product of its digits is 1333584, while the sum is 57.

The spelling of 79117817169 in words is "seventy-nine billion, one hundred seventeen million, eight hundred seventeen thousand, one hundred sixty-nine".