That’s the mass of half the stars in our galaxy.
50 billion sun size black hole..there could be one of those pulling all the existing galaxies toward the center of the universe.
A mass of 50.000.000.000 is still just chump change when you compare it with the number of stars in the visible Universe. 10-22 stars or 100,000,000,000 times 100,000,000,000. If our Universe is a member of a “multiverse” then the number of universes and stars becomes numberless. If that be the case then there are numberless copies of me and you typing away at FR. I am not sure I buy into the Multiverse model though.