stop using Py_LL and Py_ULL
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index 381835d..1a63a01 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -4206,7 +4206,7 @@
  * 23 hours at 1969-09-30 13:00:00 in Kwajalein. */
 static long long max_fold_seconds = 24 * 3600;
 /* NB: date(1970,1,1).toordinal() == 719163 */
-static long long epoch = Py_LL(719163) * 24 * 60 * 60;
+static long long epoch = 719163LL * 24 * 60 * 60;
 
 static long long
 utc_to_seconds(int year, int month, int day,