Answer the following Q with stream of consciousness. Context: Manchester United have won more trophies than any other club in English football, with a record 20 League titles, 12 FA Cups, 5 League Cups and a record 21 FA Community Shields. United have also won three UEFA Champions Leagues, one UEFA Europa League, one UEFA Cup Winners' Cup, one UEFA Super Cup, one Intercontinental Cup and one FIFA Club World Cup. In 1998 -- 99, the club became the first in the history of English football to achieve the treble of the Premier League, the FA Cup and the UEFA Champions League. By winning the UEFA Europa League in 2016 -- 17, they became one of five clubs to have won all three main UEFA club competitions, and the only English club to have won every ongoing top-flight honour available to them.

Question: how many premier league titles have man u won?
To answer the question, consider the following: Manchester United have won more trophies than any other club in English football, with a record 20 League titles, 12 FA Cups, 5 League Cups and a record 21 FA Community Shields. Therefore, the final answer is 20.