12421846666 has 8 divisors (see below), whose sum is σ = 18948579840. Its totient is φ = 6105653388.

The previous prime is 12421846627. The next prime is 12421846687. The reversal of 12421846666 is 66664812421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52634826 + ... + 52635061.

It is an arithmetic number, because the mean of its divisors is an integer number (2368572480).

Almost surely, 2^12421846666 is an apocalyptic number.

12421846666 is a deficient number, since it is larger than the sum of its proper divisors (6526733174).

12421846666 is a wasteful number, since it uses less digits than its factorization.

12421846666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105269948.

The product of its digits is 663552, while the sum is 46.

The spelling of 12421846666 in words is "twelve billion, four hundred twenty-one million, eight hundred forty-six thousand, six hundred sixty-six".