13426591979 has 2 divisors, whose sum is σ = 13426591980. Its totient is φ = 13426591978.

The previous prime is 13426591967. The next prime is 13426592017. The reversal of 13426591979 is 97919562431.

It is a weak prime.

It is an emirp because it is prime and its reverse (97919562431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13426591979 - 2¹² = 13426587883 is a prime.

It is not a weakly prime, because it can be changed into another prime (13426591949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6713295989 + 6713295990.

It is an arithmetic number, because the mean of its divisors is an integer number (6713295990).

Almost surely, 2^13426591979 is an apocalyptic number.

13426591979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13426591979 is an equidigital number, since it uses as much as digits as its factorization.

13426591979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 56.

The spelling of 13426591979 in words is "thirteen billion, four hundred twenty-six million, five hundred ninety-one thousand, nine hundred seventy-nine".