title: Force python to print entire number
body: <p>Here is my problem:</p>
  
  <p>If I try for example to print the result of :</p>
  
  <pre><code>2**64
  </code></pre>
  
  <p>will print:</p>
  
  <pre><code>18446744073709551616L
  </code></pre>
  
  <p>But now if I want to print the result of :</p>
  
  <pre><code>1.8446744*10**19
  </code></pre>
  
  <p>This will print:</p>
  
  <pre><code>1.8446744e+19
  </code></pre>
  
  <p>So my question is : how can I print the entire result of 1.8446744e+19 I want to see : </p>
  
  <pre><code>18446744000000000000
  </code></pre>
  
  <p>And what means the sign L at the end of my numbers ?</p>