79116101917 has 4 divisors (see below), whose sum is σ = 79200538396. Its totient is φ = 79031665440.

The previous prime is 79116101881. The next prime is 79116101923. The reversal of 79116101917 is 71910161197.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15931235961 + 63184865956 = 126219^2 + 251366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79116101917 is a prime.

It is a super-2 number, since 2×79116101917² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79116101927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42216834 + ... + 42218707.

It is an arithmetic number, because the mean of its divisors is an integer number (19800134599).

Almost surely, 2^79116101917 is an apocalyptic number.

It is an amenable number.

79116101917 is a deficient number, since it is larger than the sum of its proper divisors (84436479).

79116101917 is an equidigital number, since it uses as much as digits as its factorization.

79116101917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84436478.

The product of its (nonzero) digits is 23814, while the sum is 43.

The spelling of 79116101917 in words is "seventy-nine billion, one hundred sixteen million, one hundred one thousand, nine hundred seventeen".