Determine Solaris 32 bit or 64 bit version

How to find out on what kernel version (32 bit or 64 bit) Solaris is configured and running ?
# isainfo -kv
64-bit sparcv9 kernel modules
How to find out on what kernel version (32 bit or 64 bit) Solaris is configured and running ?
# isainfo -kv
64-bit sparcv9 kernel modules