C++ stoll如何转换大数字符串

#include <iostream>
#include <string>

int main() {
    std::string bigNumStr = "12345678901234567890";
    long long int bigNum = std::stoll(bigNumStr);
    
    std::cout << "The converted big number is: " << bigNum << std::endl;
    
    return 0;
}