A palindromic chain reaction

Enjoy this palindromic chain reaction from [G. L. Honaker, Jr.]

631732003560119698094434372973588490220806732655897 \
95452673441480303628721313666802004216758598573763

The above 484^th Fibonacci number has 101 digits, a digital sum of 444 and exactly
one 666 (the number of the beast) embedded immediately after the 77^th digit.
( and preceded by 313 or Enoch Haga's favorite palprime... )