That's not a special object, it's just the same as golde, but scaled up. It would be helpful to note that gold piles much larget than 200 scale up depending on the amount, so a 100,000 pile is as tall as a player.
Also, do to the fact that Badspot used a special rounding technique on gold, any gold dropped that is bigger than 999,999 will become 1gp.
Anything beyond 999999 becomes a scientific notation. It has nothing to do with the rounding(Unless I'm wrong), its just torque being stupid as stuff.
if you drop ten billion gold it turns into a gold fort and you can hide in it and play house with your golden ken doll and golden barbie doll