79216549859 has 2 divisors, whose sum is σ = 79216549860. Its totient is φ = 79216549858.

The previous prime is 79216549849. The next prime is 79216549877. The reversal of 79216549859 is 95894561297.

It is a weak prime.

It is an emirp because it is prime and its reverse (95894561297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79216549859 - 2¹² = 79216545763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79216549795 and 79216549804.

It is not a weakly prime, because it can be changed into another prime (79216549849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39608274929 + 39608274930.

It is an arithmetic number, because the mean of its divisors is an integer number (39608274930).

Almost surely, 2^79216549859 is an apocalyptic number.

79216549859 is a deficient number, since it is larger than the sum of its proper divisors (1).

79216549859 is an equidigital number, since it uses as much as digits as its factorization.

79216549859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 65.

The spelling of 79216549859 in words is "seventy-nine billion, two hundred sixteen million, five hundred forty-nine thousand, eight hundred fifty-nine".