Short answers, pulled from the story.
Christian I of Denmark issued a royal decree that officially established the University of Copenhagen on the 4th of October 1478. This document set down the rules and laws governing the new institution from its very beginning.
The university dissolved around 1531 due to religious changes when Protestantism spread through Denmark. Most of the university buildings were heavily damaged during the British bombardment of Copenhagen before King Christian III re-established the institution in 1537.
Around 6,000 students attended classes in 1960 while about 26,000 enrolled by 1980. This surge required correspondingly large growth in the number of employees across all departments.
The total number of enrolled students reached about 36,500 including 21,000 undergraduate students and 15,500 graduate students as of 2024. About 1,700 incoming exchange students arrive each year alongside 2,000 outbound exchange students.
As of October 2022 ten Nobel laureates have been affiliated with the University of Copenhagen including Niels Bohr who earned physics Nobel Prize in 1922. August Krogh received medicine Nobel Prize in 1920 for his physiological discoveries and Jens Christian Skou won chemistry Nobel Prize in 1997 discovering Na+,K+-ATPase mechanisms.