The theme of today's Tofugu podcast is the inseparability of life and death.
English contracts often have a severability clause as one of general provisions.
As a general rule, divisible claims, like savings accounts, do not become the target of divisions of inherited property.
When it's possible to separate something, it's divisible. Just imagine separating things into parts. It's possible. So, if that's possible, it's divisible. Now think of something that's nothing (i.e. "no candy bars"). That is not possible to separate into parts. That is not divisible.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.