79140868241 has 2 divisors, whose sum is σ = 79140868242. Its totient is φ = 79140868240.

The previous prime is 79140868151. The next prime is 79140868249. The reversal of 79140868241 is 14286804197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77762899600 + 1377968641 = 278860^2 + 37121^2 .

It is a cyclic number.

It is not a de Polignac number, because 79140868241 - 2¹⁴ = 79140851857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79140868241.

It is not a weakly prime, because it can be changed into another prime (79140868249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39570434120 + 39570434121.

It is an arithmetic number, because the mean of its divisors is an integer number (39570434121).

Almost surely, 2^79140868241 is an apocalyptic number.

It is an amenable number.

79140868241 is a deficient number, since it is larger than the sum of its proper divisors (1).

79140868241 is an equidigital number, since it uses as much as digits as its factorization.

79140868241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 79140868241 in words is "seventy-nine billion, one hundred forty million, eight hundred sixty-eight thousand, two hundred forty-one".