12688056839 has 2 divisors, whose sum is σ = 12688056840. Its totient is φ = 12688056838.

The previous prime is 12688056769. The next prime is 12688056859. The reversal of 12688056839 is 93865088621.

It is a strong prime.

It is an emirp because it is prime and its reverse (93865088621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12688056839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12688056859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344028419 + 6344028420.

It is an arithmetic number, because the mean of its divisors is an integer number (6344028420).

Almost surely, 2^12688056839 is an apocalyptic number.

12688056839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12688056839 is an equidigital number, since it uses as much as digits as its factorization.

12688056839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 12688056839 in words is "twelve billion, six hundred eighty-eight million, fifty-six thousand, eight hundred thirty-nine".