666666224444 has 12 divisors (see below), whose sum is σ = 1272726428568. Its totient is φ = 303030102000.

The previous prime is 666666224401. The next prime is 666666224491. The reversal of 666666224444 is 444422666666.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 666666224444.

It is a congruent number.

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, 7575752507 + ... + 7575752594.

It is an arithmetic number, because the mean of its divisors is an integer number (106060535714).

It is a self-describing number.

Almost surely, 2^666666224444 is an apocalyptic number.

It is an amenable number.

666666224444 is a deficient number, since it is larger than the sum of its proper divisors (606060204124).

666666224444 is a wasteful number, since it uses less digits than its factorization.

666666224444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151505116 (or 15151505114 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 56.

The spelling of 666666224444 in words is "six hundred sixty-six billion, six hundred sixty-six million, two hundred twenty-four thousand, four hundred forty-four".