79759495817 has 2 divisors, whose sum is σ = 79759495818. Its totient is φ = 79759495816.

The previous prime is 79759495769. The next prime is 79759495861. The reversal of 79759495817 is 71859495797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50544482041 + 29215013776 = 224821^2 + 170924^2 .

It is a cyclic number.

It is not a de Polignac number, because 79759495817 - 2³⁴ = 62579626633 is a prime.

It is not a weakly prime, because it can be changed into another prime (79759425817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39879747908 + 39879747909.

It is an arithmetic number, because the mean of its divisors is an integer number (39879747909).

Almost surely, 2^79759495817 is an apocalyptic number.

It is an amenable number.

79759495817 is a deficient number, since it is larger than the sum of its proper divisors (1).

79759495817 is an equidigital number, since it uses as much as digits as its factorization.

79759495817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200037600, while the sum is 71.

The spelling of 79759495817 in words is "seventy-nine billion, seven hundred fifty-nine million, four hundred ninety-five thousand, eight hundred seventeen".