12944577913 has 2 divisors, whose sum is σ = 12944577914. Its totient is φ = 12944577912.

The previous prime is 12944577901. The next prime is 12944577917. The reversal of 12944577913 is 31977544921.

12944577913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6484758784 + 6459819129 = 80528^2 + 80373^2 .

It is a cyclic number.

It is not a de Polignac number, because 12944577913 - 2⁵ = 12944577881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12944577917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6472288956 + 6472288957.

It is an arithmetic number, because the mean of its divisors is an integer number (6472288957).

Almost surely, 2^12944577913 is an apocalyptic number.

It is an amenable number.

12944577913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12944577913 is an equidigital number, since it uses as much as digits as its factorization.

12944577913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The spelling of 12944577913 in words is "twelve billion, nine hundred forty-four million, five hundred seventy-seven thousand, nine hundred thirteen".