666660066224 has 10 divisors (see below), whose sum is σ = 1291653878340. Its totient is φ = 333330033104.

The previous prime is 666660066217. The next prime is 666660066229. The reversal of 666660066224 is 422660066666.

It is not an unprimeable number, because it can be changed into a prime (666660066229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20833127054 + ... + 20833127085.

It is an arithmetic number, because the mean of its divisors is an integer number (129165387834).

Almost surely, 2^666660066224 is an apocalyptic number.

It is an amenable number.

666660066224 is a deficient number, since it is larger than the sum of its proper divisors (624993812116).

666660066224 is a wasteful number, since it uses less digits than its factorization.

666660066224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666254147 (or 41666254141 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 666660066224 in words is "six hundred sixty-six billion, six hundred sixty million, sixty-six thousand, two hundred twenty-four".