The Sun is a star classified as average in size, temperature and brightness.  Its proximity to earth makes it appear to us as tremendously large and bright.

The Sun is 400,000 times as bright as the Full Moon and gives the Earth six million times as much light as do all the other stars put together.

Most of the stars that can be seen on a clear night are actually brighter than the Sun.  They give us less light because they’re farther away from the Earth.

Source:  The World Almanac