QString numberToString(qint64 value, bool isMoney = false, bool decimalVisible = true, const QString & isoCode = "", CurrencySymbolPosition position = CurrencySymbolPosisition_Auto, bool useSpaceSeparator = true);

    qDebug() << numberToString(-123456789012ll);
    qDebug() << numberToString(-123456789012ll, true);
    qDebug() << numberToString(-123456789012ll, true, false);
    qDebug() << numberToString(-123456789012ll, true, true);
    qDebug() << numberToString(-123456789012ll, true, false, "EUR");
    qDebug() << numberToString(-123456789012ll, true, true,  "EUR");
    qDebug() << numberToString(-123456789012ll, true, false, "EUR", CurrencySymbolPosisition_Left);
    qDebug() << numberToString(-123456789012ll, true, false, "EUR", CurrencySymbolPosisition_Left, false);
    qDebug() << numberToString(-123456789012ll, true, true,  "EUR", CurrencySymbolPosisition_Right);
    qDebug() << numberToString(-123456789012ll, true, true,  "EUR", CurrencySymbolPosisition_Right, false);