12511654662943 has 2 divisors, whose sum is σ = 12511654662944. Its totient is φ = 12511654662942.

The previous prime is 12511654662929. The next prime is 12511654662971. The reversal of 12511654662943 is 34926645611521.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34926645611521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12511654662943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12511654660943) 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, 6255827331471 + 6255827331472.

It is an arithmetic number, because the mean of its divisors is an integer number (6255827331472).

Almost surely, 2^{12511654662943} is an apocalyptic number.

12511654662943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12511654662943 is an equidigital number, since it uses as much as digits as its factorization.

12511654662943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 55.

The spelling of 12511654662943 in words is "twelve trillion, five hundred eleven billion, six hundred fifty-four million, six hundred sixty-two thousand, nine hundred forty-three".