Read or open .s or .S extension (4 Dimention) file in python

I have a file with .s extension(S File) which dimensions are (40016862113). I want to read this file and then combine the data in 13 different time frames to get (400168*621). I used different methods to read this file, but I failed to open and read it. I will be very grateful if you help me to open this file with Python or MATLAB.