public String toString(int radix) {
        return Long.toUnsignedString(value, radix);
    }
Returns a string representation of the first argument as an
unsigned integer value in the radix specified by the second
argument.

@param radix the radix to use in the string representation
@return an unsigned string representation of the argument in the specified
        radix
clickhouse-data/src/main/java/com/clickhouse/data/value/UnsignedLong.java