12560280449 has 2 divisors, whose sum is σ = 12560280450. Its totient is φ = 12560280448.

The previous prime is 12560280407. The next prime is 12560280461. The reversal of 12560280449 is 94408206521.

12560280449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12549600625 + 10679824 = 112025^2 + 3268^2 .

It is a cyclic number.

It is not a de Polignac number, because 12560280449 - 2⁸ = 12560280193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12520280449) 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, 6280140224 + 6280140225.

It is an arithmetic number, because the mean of its divisors is an integer number (6280140225).

Almost surely, 2^12560280449 is an apocalyptic number.

It is an amenable number.

12560280449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12560280449 is an equidigital number, since it uses as much as digits as its factorization.

12560280449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 12560280449 in words is "twelve billion, five hundred sixty million, two hundred eighty thousand, four hundred forty-nine".