13321240401340 has 72 divisors (see below), whose sum is σ = 29654511726672. Its totient is φ = 5025810274560.

The previous prime is 13321240401307. The next prime is 13321240401341. The reversal of 13321240401340 is 4310404212331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13321240401299 and 13321240401308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321240401341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2425041 + ... + 5702920.

It is an arithmetic number, because the mean of its divisors is an integer number (411868218426).

Almost surely, 2^{13321240401340} is an apocalyptic number.

13321240401340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321240401340 is an abundant number, since it is smaller than the sum of its proper divisors (16333271325332).

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

13321240401340 is a wasteful number, since it uses less digits than its factorization.

13321240401340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8128235 (or 8128214 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13321240401340 its reverse (4310404212331), we get a palindrome (17631644613671).

The spelling of 13321240401340 in words is "thirteen trillion, three hundred twenty-one billion, two hundred forty million, four hundred one thousand, three hundred forty".