Inconsistent results for checking whether the OS is 32 or 64 bit

Hi

I have a Pi 4 B that I use headlessly over SSH. I can't remember
whether I installed the 32-bit or 64-bit OS on it, but different
commands found on the web give different results.

$ uname -m
aarch64

$ getconf LONG_BIT
32

$ dpkg --print-architecture
armhf

Which one is right?

Thanks