12518653663 has 2 divisors, whose sum is σ = 12518653664. Its totient is φ = 12518653662.

The previous prime is 12518653643. The next prime is 12518653669. The reversal of 12518653663 is 36635681521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12518653663 - 2³³ = 3928719071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12518653669) 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, 6259326831 + 6259326832.

It is an arithmetic number, because the mean of its divisors is an integer number (6259326832).

Almost surely, 2^12518653663 is an apocalyptic number.

12518653663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12518653663 is an equidigital number, since it uses as much as digits as its factorization.

12518653663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The spelling of 12518653663 in words is "twelve billion, five hundred eighteen million, six hundred fifty-three thousand, six hundred sixty-three".