It is a weak prime.
It is a cyclic number.
It is a Sophie Germain prime.
It is a Curzon number.
Almost surely, 220443760228273 is an apocalyptic number.
It is an amenable number.
20443760228273 is an equidigital number, since it uses as much as digits as its factorization.
20443760228273 is an evil number, because the sum of its binary digits is even.
The spelling of 20443760228273 in words is "twenty trillion, four hundred forty-three billion, seven hundred sixty million, two hundred twenty-eight thousand, two hundred seventy-three".