20008000668 has 12 divisors (see below), whose sum is σ = 46685334920. Its totient is φ = 6669333552.

The previous prime is 20008000603. The next prime is 20008000709. The reversal of 20008000668 is 86600080002.

It is a tau number, because it is divible by the number of its divisors (12).

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, 833666683 + ... + 833666706.

Almost surely, 2^20008000668 is an apocalyptic number.

It is an amenable number.

20008000668 is an abundant number, since it is smaller than the sum of its proper divisors (26677334252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20008000668 is a wasteful number, since it uses less digits than its factorization.

20008000668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667333396 (or 1667333394 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 20008000668 in words is "twenty billion, eight million, six hundred sixty-eight", and thus it is an aban number.