79075655797 has 2 divisors, whose sum is σ = 79075655798. Its totient is φ = 79075655796.

The previous prime is 79075655773. The next prime is 79075655833. The reversal of 79075655797 is 79755657097.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68916225361 + 10159430436 = 262519^2 + 100794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79075655797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79075655717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39537827898 + 39537827899.

It is an arithmetic number, because the mean of its divisors is an integer number (39537827899).

Almost surely, 2^79075655797 is an apocalyptic number.

It is an amenable number.

79075655797 is a deficient number, since it is larger than the sum of its proper divisors (1).

79075655797 is an equidigital number, since it uses as much as digits as its factorization.

79075655797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145860750, while the sum is 67.

The spelling of 79075655797 in words is "seventy-nine billion, seventy-five million, six hundred fifty-five thousand, seven hundred ninety-seven".