12556039297 has 2 divisors, whose sum is σ = 12556039298. Its totient is φ = 12556039296.

The previous prime is 12556039283. The next prime is 12556039313. The reversal of 12556039297 is 79293065521.

12556039297 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., 8959758336 + 3596280961 = 94656^2 + 59969^2 .

It is a cyclic number.

It is not a de Polignac number, because 12556039297 - 2⁷ = 12556039169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12556039297.

It is not a weakly prime, because it can be changed into another prime (12556039217) 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, 6278019648 + 6278019649.

It is an arithmetic number, because the mean of its divisors is an integer number (6278019649).

Almost surely, 2^12556039297 is an apocalyptic number.

It is an amenable number.

12556039297 is a deficient number, since it is larger than the sum of its proper divisors (1).

12556039297 is an equidigital number, since it uses as much as digits as its factorization.

12556039297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 12556039297 in words is "twelve billion, five hundred fifty-six million, thirty-nine thousand, two hundred ninety-seven".