12908255849 has 2 divisors, whose sum is σ = 12908255850. Its totient is φ = 12908255848.

The previous prime is 12908255837. The next prime is 12908255851. The reversal of 12908255849 is 94855280921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11787010624 + 1121245225 = 108568^2 + 33485^2 .

It is a cyclic number.

It is not a de Polignac number, because 12908255849 - 2⁸ = 12908255593 is a prime.

Together with 12908255851, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12908255849.

It is not a weakly prime, because it can be changed into another prime (12908255809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6454127924 + 6454127925.

It is an arithmetic number, because the mean of its divisors is an integer number (6454127925).

Almost surely, 2^12908255849 is an apocalyptic number.

It is an amenable number.

12908255849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12908255849 is an equidigital number, since it uses as much as digits as its factorization.

12908255849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 12908255849 in words is "twelve billion, nine hundred eight million, two hundred fifty-five thousand, eight hundred forty-nine".