I'll ruin the suspense for you. It's the digits 0-9 sorted by their English names.
% factor 8549176320 8549176320: 2 2 2 2 2 2 2 2 2 2 3 3 3 5 61843(This is a standard program on most UNIX and Linux systems.)
The number 7 is not a factor! (But it's cool that a huge prime number, 61843, is a factor.)
Anyone with a calculator would see this. So why do so many people state that it's divisible by 7? I think it must be that people have heard it somewhere and are just repeating it, or maybe they googled it and are repeating the wrong answer that someone else had posted.
It's an interesting illustration of how people can see something stated authoritatively and repeat it as if it was correct, when a simple check would show that it's not.
Update: It was suggested to me that it might not be apparent that 8549176320 / 7 has a remainder on a calculator that shows only 10 digits. So there's an explanation of the thing.