79747066117 has 2 divisors, whose sum is σ = 79747066118. Its totient is φ = 79747066116.

The previous prime is 79747066111. The next prime is 79747066123. The reversal of 79747066117 is 71166074797.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (79747066111) and next prime (79747066123).

It can be written as a sum of positive squares in only one way, i.e., 77640806881 + 2106259236 = 278641^2 + 45894^2 .

It is a cyclic number.

It is not a de Polignac number, because 79747066117 - 2⁷ = 79747065989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79747066111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39873533058 + 39873533059.

It is an arithmetic number, because the mean of its divisors is an integer number (39873533059).

Almost surely, 2^79747066117 is an apocalyptic number.

It is an amenable number.

79747066117 is a deficient number, since it is larger than the sum of its proper divisors (1).

79747066117 is an equidigital number, since it uses as much as digits as its factorization.

79747066117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3111696, while the sum is 55.

The spelling of 79747066117 in words is "seventy-nine billion, seven hundred forty-seven million, sixty-six thousand, one hundred seventeen".