Database: talkingdata
Question: Describe the number of app IDs and location of the event ID "79641".
SQL: SELECT COUNT(T1.app_id), T2.longitude, T2.latitude FROM app_events AS T1 INNER JOIN events AS T2 ON T1.event_id = T2.event_id WHERE T1.event_id = 79641 GROUP BY T2.longitude, T2.latitude