How many letters are in this sentence?

Without Spaces or punctiation - 30

Without Spaces - 31

With Space and no Punctuation - 37

With Space and no Punctuation if there is a space at the beginning - 38

With space and punctiation - 38

With Spaces and punctiation if there is a space at the beginning

• 39

If you you mean the Word letters then there is one.

If you mean literal tangible letters then there are none.