In the "long scale" ("Traditional British"), a 1 followed by 48 zeroes is called an octillion. In the short scale (used most often in the United States), a 1 with 48 zeroes is called a quindecillion.
48 has factors other than 1 and itself, so it is not a prime number. It is an even number that is greater than 2, so it also has 2 as a factor. Therefore, it is a composite number. All even numbers...
48 is an even number because it can easily be divided by 2 and ends with one of the number 2's multiples. The division example is : _28__ 2 l 48 -4 l v ___ 08 - 8 ___ 00