12851286949 has 2 divisors, whose sum is σ = 12851286950. Its totient is φ = 12851286948.

The previous prime is 12851286941. The next prime is 12851287021. The reversal of 12851286949 is 94968215821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10450972900 + 2400314049 = 102230^2 + 48993^2 .

It is an emirp because it is prime and its reverse (94968215821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12851286949 - 2³ = 12851286941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12851286949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12851286941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6425643474 + 6425643475.

It is an arithmetic number, because the mean of its divisors is an integer number (6425643475).

Almost surely, 2^12851286949 is an apocalyptic number.

It is an amenable number.

12851286949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12851286949 is an equidigital number, since it uses as much as digits as its factorization.

12851286949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 55.

The spelling of 12851286949 in words is "twelve billion, eight hundred fifty-one million, two hundred eighty-six thousand, nine hundred forty-nine".