20566668200 has 48 divisors (see below), whose sum is σ = 51495779580. Its totient is φ = 7593845760.

The previous prime is 20566668191. The next prime is 20566668217. The reversal of 20566668200 is 286666502.

It can be written as a sum of positive squares in 6 ways, for example, as 7336607716 + 13230060484 = 85654^2 + 115022^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3952529 + ... + 3957728.

Almost surely, 2^20566668200 is an apocalyptic number.

20566668200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20566668200 is an abundant number, since it is smaller than the sum of its proper divisors (30929111380).

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

20566668200 is a wasteful number, since it uses less digits than its factorization.

20566668200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910286 (or 7910277 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20566668200 in words is "twenty billion, five hundred sixty-six million, six hundred sixty-eight thousand, two hundred".