sixteen

The number 16. It is ten plus six, and it comes after fifteen and before seventeen. You also use it to say how old someone is: "He was sixteen" means he was 16 years old.
十六

The number 16. It is ten plus six, and it comes after fifteen and before seventeen. You also use it to say how old someone is: "He was sixteen" means he was 16 years old.
十六