I found a program that is suppose to be able to "split and merge" the PDF file. I also found a website that can do it to PDF files under 50 MB, which this is. I'm not sure which is best. To split the PDF file or to split the ZIP file I made of it. I don't know if Adobe Acrobat can merge a split PDF file by itself or if the receiving person requires the split and merge program. I think the common ZIP programs can merge split ZIP files though.