12744390427 has 2 divisors, whose sum is σ = 12744390428. Its totient is φ = 12744390426.

The previous prime is 12744390361. The next prime is 12744390469. The reversal of 12744390427 is 72409344721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12744390427 is a prime.

It is not a weakly prime, because it can be changed into another prime (12744390227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372195213 + 6372195214.

It is an arithmetic number, because the mean of its divisors is an integer number (6372195214).

Almost surely, 2^12744390427 is an apocalyptic number.

12744390427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12744390427 is an equidigital number, since it uses as much as digits as its factorization.

12744390427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 12744390427 in words is "twelve billion, seven hundred forty-four million, three hundred ninety thousand, four hundred twenty-seven".