12446666666668 has 24 divisors (see below), whose sum is σ = 23461428747680. Its totient is φ = 5743574749440.

The previous prime is 12446666666639. The next prime is 12446666666803. The reversal of 12446666666668 is 86666666664421.

It is a super-2 number, since 2×12446666666668² (a number of 27 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 12446666666668.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21390048 + ... + 21964231.

Almost surely, 2^{12446666666668} is an apocalyptic number.

It is an amenable number.

12446666666668 is a deficient number, since it is larger than the sum of its proper divisors (11014762081012).

12446666666668 is a wasteful number, since it uses less digits than its factorization.

12446666666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43359817 (or 43359815 counting only the distinct ones).

The product of its digits is 2579890176, while the sum is 73.

The spelling of 12446666666668 in words is "twelve trillion, four hundred forty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-eight".