12642666024887 has 2 divisors, whose sum is σ = 12642666024888. Its totient is φ = 12642666024886.

The previous prime is 12642666024883. The next prime is 12642666024899. The reversal of 12642666024887 is 78842066624621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12642666024887 - 2² = 12642666024883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642666024881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321333012443 + 6321333012444.

It is an arithmetic number, because the mean of its divisors is an integer number (6321333012444).

Almost surely, 2^{12642666024887} is an apocalyptic number.

12642666024887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642666024887 is an equidigital number, since it uses as much as digits as its factorization.

12642666024887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74317824, while the sum is 62.

The spelling of 12642666024887 in words is "twelve trillion, six hundred forty-two billion, six hundred sixty-six million, twenty-four thousand, eight hundred eighty-seven".