12406127449 has 2 divisors, whose sum is σ = 12406127450. Its totient is φ = 12406127448.

The previous prime is 12406127443. The next prime is 12406127497. The reversal of 12406127449 is 94472160421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9767764224 + 2638363225 = 98832^2 + 51365^2 .

It is a cyclic number.

It is not a de Polignac number, because 12406127449 - 2⁹ = 12406126937 is a prime.

It is not a weakly prime, because it can be changed into another prime (12406127443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203063724 + 6203063725.

It is an arithmetic number, because the mean of its divisors is an integer number (6203063725).

Almost surely, 2^12406127449 is an apocalyptic number.

It is an amenable number.

12406127449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12406127449 is an equidigital number, since it uses as much as digits as its factorization.

12406127449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 12406127449 in words is "twelve billion, four hundred six million, one hundred twenty-seven thousand, four hundred forty-nine".