20200686868 has 6 divisors (see below), whose sum is σ = 35351202026. Its totient is φ = 10100343432.

The previous prime is 20200686851. The next prime is 20200686871. The reversal of 20200686868 is 86868600202.

It can be written as a sum of positive squares in only one way, i.e., 19717214724 + 483472144 = 140418^2 + 21988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525085855 + ... + 2525085862.

Almost surely, 2^20200686868 is an apocalyptic number.

It is an amenable number.

20200686868 is a deficient number, since it is larger than the sum of its proper divisors (15150515158).

20200686868 is a wasteful number, since it uses less digits than its factorization.

20200686868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050171721 (or 5050171719 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 20200686868 in words is "twenty billion, two hundred million, six hundred eighty-six thousand, eight hundred sixty-eight".