79255691771 has 2 divisors, whose sum is σ = 79255691772. Its totient is φ = 79255691770.

The previous prime is 79255691759. The next prime is 79255691797. The reversal of 79255691771 is 17719655297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79255691771 - 2³⁰ = 78181949947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79255691771.

It is not a weakly prime, because it can be changed into another prime (79255691171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39627845885 + 39627845886.

It is an arithmetic number, because the mean of its divisors is an integer number (39627845886).

Almost surely, 2^79255691771 is an apocalyptic number.

79255691771 is a deficient number, since it is larger than the sum of its proper divisors (1).

79255691771 is an equidigital number, since it uses as much as digits as its factorization.

79255691771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8334900, while the sum is 59.

The spelling of 79255691771 in words is "seventy-nine billion, two hundred fifty-five million, six hundred ninety-one thousand, seven hundred seventy-one".