Comment by gumby

If you have a business you get a separate phone number for it, and potentially for each customer project. You can reuse it when the project is done, or it makes it easy to hand off the amount, assets etc to the customer.

What I do is use my gf's number (so occasionally I have to ask her for the code that shows up on her phone :-) ). I am fortunate not to use google for anything I care about, or even much at all, so this is no inconvenience for me; OTOH she not only keeps everything in google but used to work there.