This verse, since it is so large, is actually in a larger than average size multiverse, but the multiverse it is in actually has a strange structure. This universe is like the "core" of it since it is so giant, and the other universes seem to orbit quickly around it.
The most popular theory to why this universe being so big is a collision with many other universes. This could be true since verses have collided before and they got much larger, but there would have to be a lot of universes to collide with each other since this universe is so big.
Another possible reason would be that this was inflated. This would be a very possible reason, but this one, by calculations, is far too young to inflate.
This universe is pretty similar to the average universe. The cosmic web is just larger. There are a similar amount of planets and stars, just more spaced out. There is a white hole in the middle of this universe, which is unusual, but other than that, it is a pretty standard universe other than its size.