1320013344444 has 24 divisors (see below), whose sum is σ = 3080128340688. Its totient is φ = 439990561920.

The previous prime is 1320013344439. The next prime is 1320013344473. The reversal of 1320013344444 is 4444433100231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1336017 + ... + 2103560.

It is an arithmetic number, because the mean of its divisors is an integer number (128338680862).

Almost surely, 2^{1320013344444} is an apocalyptic number.

It is an amenable number.

1320013344444 is an abundant number, since it is smaller than the sum of its proper divisors (1760114996244).

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

1320013344444 is a wasteful number, since it uses less digits than its factorization.

1320013344444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471565 (or 3471563 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 1320013344444 its reverse (4444433100231), we get a palindrome (5764446444675).

The spelling of 1320013344444 in words is "one trillion, three hundred twenty billion, thirteen million, three hundred forty-four thousand, four hundred forty-four".