Yes, a SNMP timetick is 0.001 seconds, or 100 timeticks = 1 second. So to get this data in days, for example, you need to use the post-process module feature, and multiply the values obtained by 0.000000116 .
This is the result of the value obtained divided by 8640000. Remember that post-processing only allows you to specify values to multiply not to divide, so 0.000000116 = 1 / 8640000. You can use the same method to get the value in hours, for example, this will be 100x60x60 = 360000, and 1/360000 = 0.000002778.