When can i touch the baby mice?

i bought a mouse to feed to one of my ball pythons. I noticed it was really fat but didnt think much of it. The next day i seen that she had popped out at least 6 babies. It is now the end day 5 since they were born. When can i touch them to clean the cage ? and when can i touch them out of curiosity, like how many and stuff?also is there anything to know about what to do with them? anything special?Have kept rodents as pets before but never had babies happen.