vim, 40 bytes

Result

WA

Code [DL]

echo sort(split(getline(1,'$')[0],''))

Disassembly

echo sort(split(getline(1,'$')[0],''))<CR><NL>

stdin

4567800192386747577625691689206695794182247325147365712225912442073991244929012569683451359733534815

stdout

4567800192386747577625691689206695794182247325147365712225912442073991244929012569683451359733534815

stderr

strace