#Answer 52. Befunge-98, distance 8 + 2
Thanks to @DestructibleWatermelon for golfing a byte!
--2'3k:'2k*.@2(#"#28@P2*Jp;math 2\^45#2^41 NB.`(expt 2 39); ^ exit @n.out (*2 32#e#a44******O@)//2 25)#e#2ej#printf("%d" $[2**43]bye'$/*#"A#327;N<."$"/class HelloWorld {static void Main() 0{;n***~# System<.Console<.<.#1024
print(2^51)--;#0}}//4|#6904r"$2 #puts 16384 8*di 2^18o8*'*[[[268*^?>
Added '3k before the 2, and '2k*. between the 2 and @.
-- does nothing,
'3k2 puts 52 2s onto the stack, and
'2k*.@ multiplies them together, prints the number, and exits
Also, I added a d" after printf("% to make other people's lives easier, as I had 2 extra characters. It doesn't affect the Befunge-98 program.