That depends on whether they are common years, leap years, mean solar years, etc. On the Gregorian calendar, 4 consecutive years are usually (and on the Julian calendar always) 3 common (365-day) years and 1 leap year. That makes 1,461 days. There are 24 hours in a day and 3,600 seconds in an hour, for a total of 86,400 seconds in a day. Multiplying that by 1,461 gives 126,230,400 seconds in a typical 4-year period.
There is about .000000126755 years in 4 seconds.
567648000+4 days= 567993600 seconds, if there were four leap years in it
4 years
5 years 21 days 4 hours 32 minutes and 17 seconds = 159,615,367.00146776438 seconds.
67,789,433,8976
3.2 trillion.
16 years = 504,910,816 seconds.
There are 1,452,576,000 seconds in 46 years.
There are 1,358,724,800 seconds in 43 years.
There are 1263141040 seconds in 40 years
10 years = 315,569,260 seconds.
About 1,009,843,200 seconds in 32 years.