1311224664144 has 20 divisors (see below), whose sum is σ = 3387330382496. Its totient is φ = 437074888032.

The previous prime is 1311224664133. The next prime is 1311224664179. The reversal of 1311224664144 is 4414664221131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13658590204 + ... + 13658590299.

Almost surely, 2^{1311224664144} is an apocalyptic number.

It is an amenable number.

1311224664144 is an abundant number, since it is smaller than the sum of its proper divisors (2076105718352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311224664144 is a wasteful number, since it uses less digits than its factorization.

1311224664144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27317180514 (or 27317180508 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

Adding to 1311224664144 its reverse (4414664221131), we get a palindrome (5725888885275).

The spelling of 1311224664144 in words is "one trillion, three hundred eleven billion, two hundred twenty-four million, six hundred sixty-four thousand, one hundred forty-four".