FBX file exist file size limit?

I had three fbx files.

Each file size is 11Mb, 200Mb and 900Mb.

By the way, Only importing succed 11Mb file in unity.

What I import 200Mb file and 900Mb file?

If unity engine is exists file size or 3d model property(mesh, verties, triange, etc..), I want those value.