they usually live to be 150+ years old. cutting one down in Arizona, where they’re native, is a felony with a maximum 9 months in prison.
in my brief wikipedia exploration to find out how old they could be for this ask i found out that there was a dude in 1982 who was vandalizing one (which is also highly illegal) by shooting at it and then poking at it, and not only did the 500 pound arm of the cactus he was shooting at fall on top of him, but the actual trunk of the cactus then also proceeded to fall on him. he died. smited by the cactus gods for his transgressions