12744135949 has 2 divisors, whose sum is σ = 12744135950. Its totient is φ = 12744135948.

The previous prime is 12744135917. The next prime is 12744135953. The reversal of 12744135949 is 94953144721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12672004900 + 72131049 = 112570^2 + 8493^2 .

It is a cyclic number.

It is not a de Polignac number, because 12744135949 - 2⁵ = 12744135917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12744135979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372067974 + 6372067975.

It is an arithmetic number, because the mean of its divisors is an integer number (6372067975).

Almost surely, 2^12744135949 is an apocalyptic number.

It is an amenable number.

12744135949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12744135949 is an equidigital number, since it uses as much as digits as its factorization.

12744135949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The spelling of 12744135949 in words is "twelve billion, seven hundred forty-four million, one hundred thirty-five thousand, nine hundred forty-nine".