Is there a maximum number of sitemaps or anything that you can submit to Google. For example, for large sites (thousands and thousands of pages) would it be wise to submit 1 very large sitemap, or multiple smaller ones? Or does it not make a difference?
Most sitemappers will automatically start splitting into multiple sitemap files when you are getting near the limit. It is called xml sitemaps splitting
I had never worked on sites larger than 100 pages and had no idea that this could also be done. I will look out in the future.