Pope Francis is the 266th pope. If you count Pope Stephen who died before taking office, 267th.
I am sure there are many popes in Heaven but am equally sure that there are a number of popes burning in hell.
the popes
The majority of lists of popes show Pope Francis as pope number 266.
About 80 popes have been canonized and a number of others are at various stages of the canonization process.
While a number of popes are buried in St. Peter's Basilica, not all of them are buried there.
263
Pope Leo I was number 45.
There are a number of popes named Alexander. Please be specific.
Blessed Pope Pius IX (the 9th) was number 256 in the list of Popes! He was Pope from 1846-1878, and now has the title "Blessed".
In the history of the Church there have been a number of bad, even evil, popes but not a single one taught anything contrary to Catholic doctrine.
Popes do not elect popes. Popes are elected by the cardinal electors.
While there have been a number of truly bad popes who were vile and disgusting, none of them would be classified as being heretics. None of the bad popes ever taught anything contrary to the doctrines of the Catholic Church.