79552766617 has 2 divisors, whose sum is σ = 79552766618. Its totient is φ = 79552766616.

The previous prime is 79552766593. The next prime is 79552766627. The reversal of 79552766617 is 71666725597.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79552766601 + 16 = 282051^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 79552766617 - 2³⁵ = 45193028249 is a prime.

It is not a weakly prime, because it can be changed into another prime (79552766627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39776383308 + 39776383309.

It is an arithmetic number, because the mean of its divisors is an integer number (39776383309).

Almost surely, 2^79552766617 is an apocalyptic number.

It is an amenable number.

79552766617 is a deficient number, since it is larger than the sum of its proper divisors (1).

79552766617 is an equidigital number, since it uses as much as digits as its factorization.

79552766617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33339600, while the sum is 61.

The spelling of 79552766617 in words is "seventy-nine billion, five hundred fifty-two million, seven hundred sixty-six thousand, six hundred seventeen".