The number of ways to shuffle a deck of cards is actually significantly smaller than the number of atoms in the universe. A standard deck of 52 playing cards can be shuffled in approximately 8 x 10^67 ways, which is an incredibly large number, but still much smaller than the estimated number of atoms in the observable universe.
To put it into perspective, it's estimated that there are around 10^80 atoms in the observable universe. This number is based on current scientific estimates and could vary depending on different models and theories. However, even considering the most generous estimates, the number of possible card shuffles is still significantly smaller.
The vastness of the number 8 x 10^67 can be difficult to comprehend, but it pales in comparison to the estimated number of atoms in the universe. So, to answer your question, there are far more atoms in the universe than there are ways to shuffle a deck of cards.