20039868668 has 12 divisors (see below), whose sum is σ = 37132697952. Its totient is φ = 9430526400.

The previous prime is 20039868539. The next prime is 20039868679. The reversal of 20039868668 is 86686893002.

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, 147351908 + ... + 147352043.

It is an arithmetic number, because the mean of its divisors is an integer number (3094391496).

Almost surely, 2^20039868668 is an apocalyptic number.

It is an amenable number.

20039868668 is a deficient number, since it is larger than the sum of its proper divisors (17092829284).

20039868668 is a wasteful number, since it uses less digits than its factorization.

20039868668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294703972 (or 294703970 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 20039868668 in words is "twenty billion, thirty-nine million, eight hundred sixty-eight thousand, six hundred sixty-eight".