12688334663 has 2 divisors, whose sum is σ = 12688334664. Its totient is φ = 12688334662.

The previous prime is 12688334651. The next prime is 12688334753. The reversal of 12688334663 is 36643388621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12688334663 - 2⁴ = 12688334647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12688334623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344167331 + 6344167332.

It is an arithmetic number, because the mean of its divisors is an integer number (6344167332).

Almost surely, 2^12688334663 is an apocalyptic number.

12688334663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12688334663 is an equidigital number, since it uses as much as digits as its factorization.

12688334663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 50.

The spelling of 12688334663 in words is "twelve billion, six hundred eighty-eight million, three hundred thirty-four thousand, six hundred sixty-three".