The CPU used by this session metric is in centiseconds (or 100ths of a second) as are almost all timed statistics in Oracle. Also, if you examine the data in V$SYSSTAT (rather than V$SESSTAT) then it includes all sessions. Therefore theoretically, you could see something close to cpu_count * elapsed time.

Having run utlestat for a period of 11,989 seconds, the total CPU used by this session was 1,932,931 - which I note is longer than the analysis period.