How many atoms does it take to write, not store, a qbit (absolute theoretical minimum)? If you can create a writing system in which each atom represents a written zero, i.e., each atom represents a mark on paper, you still need a googol atoms to write one googolplex, and there aren't a googol atoms in the observable universe. Can you conceive of a writing system in which each atom represents more than one zero? In fact, representing "0000" with one atom wouldn't do it.
If all the mass in the observable universe were made up of
1H atoms, there would still not be enough. By more than a few orders of magnitude. If all the mass of the observable universe were made up electrons, there wouldn't be enough.
What about time? Well, if you had written one "0" every
Planck time, for the age of the universe so far, you'd have written fewer than 10
61 zeros. So you would need more than 10
39 times the age of the universe to finish the job.