33666686668 has 24 divisors (see below), whose sum is σ = 59536996064. Its totient is φ = 16656192000.

The previous prime is 33666686653. The next prime is 33666686723. The reversal of 33666686668 is 86668666633.

It is a super-2 number, since 2×33666686668² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3137833 + ... + 3148543.

Almost surely, 2^33666686668 is an apocalyptic number.

It is an amenable number.

33666686668 is a deficient number, since it is larger than the sum of its proper divisors (25870309396).

33666686668 is a wasteful number, since it uses less digits than its factorization.

33666686668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18913 (or 18911 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 64.

The spelling of 33666686668 in words is "thirty-three billion, six hundred sixty-six million, six hundred eighty-six thousand, six hundred sixty-eight".