13040443049 has 2 divisors, whose sum is σ = 13040443050. Its totient is φ = 13040443048.

The previous prime is 13040443037. The next prime is 13040443069. The reversal of 13040443049 is 94034404031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9817837225 + 3222605824 = 99085^2 + 56768^2 .

It is an emirp because it is prime and its reverse (94034404031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13040443049 - 2¹² = 13040438953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13040443069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6520221524 + 6520221525.

It is an arithmetic number, because the mean of its divisors is an integer number (6520221525).

Almost surely, 2^13040443049 is an apocalyptic number.

It is an amenable number.

13040443049 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040443049 is an equidigital number, since it uses as much as digits as its factorization.

13040443049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 13040443049 in words is "thirteen billion, forty million, four hundred forty-three thousand, forty-nine".