% perl -E 'say "ok" if 18446744073709554600 > ~0'
ok
% perl -E 'say "ok" if 18446744073709554599 > ~0'
%

##</code><code>##

>perl -E "say 'ok' if 18446744073709553665 > ~0"
ok

>perl -E "say 'ok' if 18446744073709553664 > ~0"

>

##</code><code>##

>perl -E "say 'ok' if 18446744073709554599 > ~0"
ok

>