Actually, no
Because everyone believes something is true does not make it true.
For example, belief in a lie does not change the lie into truth. Regardless of how many, or if everyone, believes in that lie.
In other words, it doesn't matter how many people believe there is no such thing as god?
Good point!
OR
How many believe there is a living god..it can go either way and does not clarify what is actually true.