1.1B+
01. Dark Horse – 1,187,833,097
02. Roar – 1,157,236,758
600M+
03. Firework – 649,636,846
500M+
04. Last Friday Night – 585,895,571
400M+
05. Hot N Cold – 453,038,267
06. Wide Awake – 438,081,496
07. This Is How We Do – 400,930,836
300M+
08. E.T. – 377,410,051
09. Part Of Me – 366,582,285
10. The One That Got Away – 345,482,954
200M+
11. California Gurls – 273,020,607
12. Unconditionally – 221,521,954
100M+
13. Teenage Dream – 167,236,531
14. I Kissed A Girl – 157,522,459
15. Birthday – 113,687,569
50M+
16. Thinking Of You – 92,321,697
17. Waking Up In Vegas – 77,995,332
18. Ur So Gay – 57,936,698
Total: 7,123,371,008
7B from only 18 videos.
And that's without adding views from alternate versions of videos (like Thinking of You Extended, Teenage Dream Director's Cut, audio/lyric videos etc.)
