long data type
The xs:long data type represents an integer that is less than or equal to 9 223 372 036 854 775 807 and greater than or equal to -9 223 372 036 854 775 808. Derived from data type xs:integer.
The lexical form of xs:long is an optional sign that is
followed by a finite-length sequence of decimal digits. If the sign
is omitted, a positive sign (+) is assumed. The following numbers
are valid examples of this data type: -1, 0, 12678967543233,
and +100000.