It’s 515 LLCs and corporations. I don’t know what ties them all together.
https://www.documentcloud.org/documents/2838696-Trump-2016-Financial-Disclosure.html
I’m not a lawyer of any kind, so the difference between an LLC and any other kind of corporation is lost on me. What I do know is that the corporation is responsible and not individuals within the corporation.
That suggests to me that any individual can step outside the corporation and be free of it.