13321213440404 has 48 divisors (see below), whose sum is σ = 24727116713040. Its totient is φ = 6257714135040.

The previous prime is 13321213440401. The next prime is 13321213440439. The reversal of 13321213440404 is 40404431212331.

It can be written as a sum of positive squares in 8 ways, for example, as 1432095676804 + 11889117763600 = 1196702^2 + 3448060^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321213440401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226148684 + ... + 226207580.

It is an arithmetic number, because the mean of its divisors is an integer number (515148264855).

Almost surely, 2^{13321213440404} is an apocalyptic number.

It is an amenable number.

13321213440404 is a deficient number, since it is larger than the sum of its proper divisors (11405903272636).

13321213440404 is a wasteful number, since it uses less digits than its factorization.

13321213440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64748 (or 64746 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 13321213440404 its reverse (40404431212331), we get a palindrome (53725644652735).

The spelling of 13321213440404 in words is "thirteen trillion, three hundred twenty-one billion, two hundred thirteen million, four hundred forty thousand, four hundred four".