php, 48 bytes

Result

WA

Code [DL]

<?=($a=str_split(readline()))|sort($a)?join($a);

stdin

8089014103912868445805783534116386582567726979859746849612254463282604152697038315093481515643119849

stdout

stderr

PHP Parse error:  syntax error, unexpected ';' in /volume/CODE on line 1

strace