What does the format of of the filename of keystore generated by the eth2.0-deposit-cli mean?

When I eth2.0 deposit client, it generates the keystore file with a filename in a peculiar format. For example:
keystore-m_12381_3600_1_0_0-1646556486.json
What exactly does this file name format means?
submitted by /u/finlaydotweber
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