12668567656103 has 4 divisors (see below), whose sum is σ = 12668988610800. Its totient is φ = 12668146701408.

The previous prime is 12668567656067. The next prime is 12668567656127. The reversal of 12668567656103 is 30165676586621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12668567656103 - 2³⁶ = 12599848179367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668567656603) 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 in 3 ways as a sum of consecutive naturals, for example, 210432203 + ... + 210492396.

It is an arithmetic number, because the mean of its divisors is an integer number (3167247152700).

Almost surely, 2^{12668567656103} is an apocalyptic number.

12668567656103 is a deficient number, since it is larger than the sum of its proper divisors (420954697).

12668567656103 is an equidigital number, since it uses as much as digits as its factorization.

12668567656103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420954696.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 12668567656103 in words is "twelve trillion, six hundred sixty-eight billion, five hundred sixty-seven million, six hundred fifty-six thousand, one hundred three".