12401345309 has 2 divisors, whose sum is σ = 12401345310. Its totient is φ = 12401345308.

The previous prime is 12401345303. The next prime is 12401345357. The reversal of 12401345309 is 90354310421.

12401345309 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., 10243464100 + 2157881209 = 101210^2 + 46453^2 .

It is an emirp because it is prime and its reverse (90354310421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12401345309 - 2³² = 8106378013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401345303) 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, 6200672654 + 6200672655.

It is an arithmetic number, because the mean of its divisors is an integer number (6200672655).

Almost surely, 2^12401345309 is an apocalyptic number.

It is an amenable number.

12401345309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401345309 is an equidigital number, since it uses as much as digits as its factorization.

12401345309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 12401345309 in words is "twelve billion, four hundred one million, three hundred forty-five thousand, three hundred nine".