It depends what hours you are trying to count. In the office? Remote? Actually 'working'? Including shuttle time? In my FAANG circle, small N, none of those values would be above 40 hours a week, except possibly if you include shuttle time. Certainly not anything approaching an average of 60-65 hours a week. That's averaging a 12-13 hour day, in a 10am-4pm core hour culture.

I'm at a unicorn in the bay area, and I'd say it's under 45. It depends on the day, and I occasionally check on work in the evening, but that's rare. My hours in the office are about 45, but that includes breakfast and a long lunch.

I've also been pleasantly surprised about the unlimited vacation. I started late in the year, and the company isn't really busy near Christmas. But I've already taken a decent amount of vacation.

The average is probably around 45. 60-65 are the high hand numbers. Some people in SV do less than 40 real hours of work, a lot 40-45 and some do a few days/weeks of a stretch above 50h but let's not fall into the fallacy that everyone is working +60 hours all the time.