function humanReadableLarge($num, $precision = 2)
{
    if (!is_numeric($num)) {
        return $num;
    }

    $units = [
        '', 'thousand', 'million', 'billion', 'trillion', 'quadrillion',
        'quintillion', 'sextillion', 'septillion', 'octillion', 'nonillion',
        'decillion', 'undecillion', 'duodecillion', 'tredecillion',
        'quattuordecillion', 'quindecillion', 'sexdecillion', 'septendecillion',
        'octodecillion', 'novemdecillion', 'vigintillion'
    ];


    $numStr = (string)$num;
    $length = strlen($numStr);


    $group = floor(($length - 1) / 3);
    if ($group >= count($units)) {
        $group = count($units) - 1; // fallback to largest known name
    }

    $divisor = bcpow('10', (string)($group * 3));
    $shortValue = bcdiv($num, $divisor, $precision);


    $shortValue = rtrim(rtrim($shortValue, '0'), '.');

    return "{$shortValue} {$units[$group]}";
}