13079642449 has 4 divisors (see below), whose sum is σ = 13084925364. Its totient is φ = 13074359536.

The previous prime is 13079642447. The next prime is 13079642489. The reversal of 13079642449 is 94424697031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4275198225 + 8804444224 = 65385^2 + 93832^2 .

It is a cyclic number.

It is not a de Polignac number, because 13079642449 - 2¹ = 13079642447 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13079642447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637742 + ... + 2642695.

It is an arithmetic number, because the mean of its divisors is an integer number (3271231341).

Almost surely, 2^13079642449 is an apocalyptic number.

It is an amenable number.

13079642449 is a deficient number, since it is larger than the sum of its proper divisors (5282915).

13079642449 is an equidigital number, since it uses as much as digits as its factorization.

13079642449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282914.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 13079642449 in words is "thirteen billion, seventy-nine million, six hundred forty-two thousand, four hundred forty-nine".