How many blocks did it take to make the pyramid of Giza?

well my studies show that in the pyramid of giza there are about 550,000,000 blocks and to some it may seem to much and to some a little to less but if im right the blocks do not stick to too little or too much blocks. sounds nonsense? i thought so to but actually its a hot climate in Egypt so they have to spread out the building throughout about 3-4 years.