Integral literals with Exp?

[Nicolas Sicard via Digitalmars-d]

On Monday, 15 September 2014 at 09:19:12 UTC, eles wrote:
> On Monday, 15 September 2014 at 09:13:52 UTC, Walter Bright 
> wrote:
>> On 9/15/2014 1:54 AM, John Colvin wrote:
>>> On Monday, 15 September 2014 at 00:54:40 UTC, Walter Bright 
>>> wrote:
>>>> On 9/13/2014 12:23 AM, bearophile wrote:
>
>> Readability is the goal, not minimizing the number of 
>> characters.
>
> Exactly:
> 6.02214129×10^23
> http://en.wikipedia.org/wiki/Avogadro_constant
>
> Some constants are widely known in the eXX form.

What integral type would hold that value?