There is a theory that states the number of atoms (well, electrons) in the universe is exactly 1.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;One-electron_universe" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;One-electron_universe</a>