"It sounds fascinating, but there are more combinations of this number than there are atoms in the universe."
It's not true, people keep repeating this nonsense, which was once used as a figure of speech to emphasize how many combinations there are... you don't actually believe it ?

Why do you think this is not true? According to online sources, scientists estimate that there are
only 10
80 atoms in the observable universe.
"Online sources"

you can as well say earth is flat because "online sources" say so.
You have to be... not very smart to believe such nonsense.
There are approximately 6.85 × 10³³ (6.85 decillion) times more atoms in the
observable universe than Bitcoin addresses.