12663215251387 has 2 divisors, whose sum is σ = 12663215251388. Its totient is φ = 12663215251386.

The previous prime is 12663215251363. The next prime is 12663215251429. The reversal of 12663215251387 is 78315251236621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12663215251387 is a prime.

It is not a weakly prime, because it can be changed into another prime (12663215251307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331607625693 + 6331607625694.

It is an arithmetic number, because the mean of its divisors is an integer number (6331607625694).

Almost surely, 2^{12663215251387} is an apocalyptic number.

12663215251387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663215251387 is an equidigital number, since it uses as much as digits as its factorization.

12663215251387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 52.

The spelling of 12663215251387 in words is "twelve trillion, six hundred sixty-three billion, two hundred fifteen million, two hundred fifty-one thousand, three hundred eighty-seven".