13321230320040 has 64 divisors (see below), whose sum is σ = 39965504544000. Its totient is φ = 3552166877952.

The previous prime is 13321230320033. The next prime is 13321230320087. The reversal of 13321230320040 is 4002303212331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148161 + ... + 5163759.

It is an arithmetic number, because the mean of its divisors is an integer number (624461008500).

Almost surely, 2^{13321230320040} is an apocalyptic number.

13321230320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321230320040 is an abundant number, since it is smaller than the sum of its proper divisors (26644274223960).

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

13321230320040 is a wasteful number, since it uses less digits than its factorization.

13321230320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037746 (or 5037742 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13321230320040 its reverse (4002303212331), we get a palindrome (17323533532371).

The spelling of 13321230320040 in words is "thirteen trillion, three hundred twenty-one billion, two hundred thirty million, three hundred twenty thousand, forty".