12401043409 has 2 divisors, whose sum is σ = 12401043410. Its totient is φ = 12401043408.

The previous prime is 12401043313. The next prime is 12401043419. The reversal of 12401043409 is 90434010421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11491840000 + 909203409 = 107200^2 + 30153^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401043409 - 2⁹ = 12401042897 is a prime.

It is not a weakly prime, because it can be changed into another prime (12401043419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200521704 + 6200521705.

It is an arithmetic number, because the mean of its divisors is an integer number (6200521705).

Almost surely, 2^12401043409 is an apocalyptic number.

It is an amenable number.

12401043409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401043409 is an equidigital number, since it uses as much as digits as its factorization.

12401043409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 12401043409 in words is "twelve billion, four hundred one million, forty-three thousand, four hundred nine".