13.12.10

The number of stars in the universe

is 300 sextillion, or 3 trillion times 100 billion.
Some starry, starry night: 300 sextillion

(Another researcher) "Conroy looked up how many cells are in the average human body-50 trillion or so-and multiplied that by the 6 billion people on Earth. And he came up with about 300 sextillion."