12744676421 has 2 divisors, whose sum is σ = 12744676422. Its totient is φ = 12744676420.

The previous prime is 12744676387. The next prime is 12744676541. The reversal of 12744676421 is 12467644721.

12744676421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11775288196 + 969388225 = 108514^2 + 31135^2 .

It is a cyclic number.

It is not a de Polignac number, because 12744676421 - 2¹⁴ = 12744660037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12746676421) 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, 6372338210 + 6372338211.

It is an arithmetic number, because the mean of its divisors is an integer number (6372338211).

Almost surely, 2^12744676421 is an apocalyptic number.

It is an amenable number.

12744676421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12744676421 is an equidigital number, since it uses as much as digits as its factorization.

12744676421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 44.

The spelling of 12744676421 in words is "twelve billion, seven hundred forty-four million, six hundred seventy-six thousand, four hundred twenty-one".