• That might be a hobt_id. You find it through sys.partitions:

    SELECT o.name, i.name

    FROM sys.partitions p

    JOIN sys.objects o ON p.object_id = o.object_id

    JOIN sys.indexes i ON p.object_id = i.object_id

    AND p.index_id = i.index_id

    WHERE p.hobt_id = 72057594065256448