20266607208 has 32 divisors (see below), whose sum is σ = 51140043360. Its totient is φ = 6692399040.

The previous prime is 20266607173. The next prime is 20266607227. The reversal of 20266607208 is 80270666202.

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, 3943423 + ... + 3948558.

It is an arithmetic number, because the mean of its divisors is an integer number (1598126355).

Almost surely, 2^20266607208 is an apocalyptic number.

It is an amenable number.

20266607208 is an abundant number, since it is smaller than the sum of its proper divisors (30873436152).

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

20266607208 is a wasteful number, since it uses less digits than its factorization.

20266607208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892097 (or 7892093 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 20266607208 in words is "twenty billion, two hundred sixty-six million, six hundred seven thousand, two hundred eight".