666573333868 has 24 divisors (see below), whose sum is σ = 1279936900368. Its totient is φ = 301844527296.

The previous prime is 666573333841. The next prime is 666573333911. The reversal of 666573333868 is 868333375666.

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, 120928546 + ... + 120934057.

It is an arithmetic number, because the mean of its divisors is an integer number (53330704182).

Almost surely, 2^666573333868 is an apocalyptic number.

It is an amenable number.

666573333868 is a deficient number, since it is larger than the sum of its proper divisors (613363566500).

666573333868 is a wasteful number, since it uses less digits than its factorization.

666573333868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241862673 (or 241862671 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 64.

The spelling of 666573333868 in words is "six hundred sixty-six billion, five hundred seventy-three million, three hundred thirty-three thousand, eight hundred sixty-eight".