I was looking for an easy option to rename all the photos in a vacation folder organized for print (collected from various devices) to a common file name so that the index print comes sorted. Windows explorer has a built-in option for that. Organize the images / photos in order, select all, right click on first photo and choose rename option, enter the base file name and hit enter key. Windows explorer will add a space in the end along with serial numbers.
Check this page for more details. http://www.howtogeek.com/111859/how-to-batch-rename-files-in-windows-4-ways-to-rename-multiple-files/