def secondes(number: int) -> str:
    """Convert a number of seconds in human-readable format."""
    formatted = []
    if number >= 86400:
        formatted.append(f"{number // 86400} days")
        number %= 86400
    if number >= 3600:
        formatted.append(f"{number // 3600} hours")
        number %= 3600
    if number >= 60:
        formatted.append(f"{number // 60} minutes")
        number %= 60
    if number > 0:
        formatted.append(f"{number} seconds")
    return ", ".join(formatted)