79579815841 has 2 divisors, whose sum is σ = 79579815842. Its totient is φ = 79579815840.

The previous prime is 79579815803. The next prime is 79579815851. The reversal of 79579815841 is 14851897597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79524000000 + 55815841 = 282000^2 + 7471^2 .

It is an emirp because it is prime and its reverse (14851897597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79579815841 - 2⁷ = 79579815713 is a prime.

It is not a weakly prime, because it can be changed into another prime (79579815851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39789907920 + 39789907921.

It is an arithmetic number, because the mean of its divisors is an integer number (39789907921).

Almost surely, 2^79579815841 is an apocalyptic number.

It is an amenable number.

79579815841 is a deficient number, since it is larger than the sum of its proper divisors (1).

79579815841 is an equidigital number, since it uses as much as digits as its factorization.

79579815841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 64.

The spelling of 79579815841 in words is "seventy-nine billion, five hundred seventy-nine million, eight hundred fifteen thousand, eight hundred forty-one".