13444505449 has 2 divisors, whose sum is σ = 13444505450. Its totient is φ = 13444505448.

The previous prime is 13444505377. The next prime is 13444505467. The reversal of 13444505449 is 94450544431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13088504025 + 356001424 = 114405^2 + 18868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13444505449 is a prime.

It is not a weakly prime, because it can be changed into another prime (13444505489) 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, 6722252724 + 6722252725.

It is an arithmetic number, because the mean of its divisors is an integer number (6722252725).

Almost surely, 2^13444505449 is an apocalyptic number.

It is an amenable number.

13444505449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444505449 is an equidigital number, since it uses as much as digits as its factorization.

13444505449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 13444505449 in words is "thirteen billion, four hundred forty-four million, five hundred five thousand, four hundred forty-nine".