13443321345540 has 96 divisors (see below), whose sum is σ = 38637167063040. Its totient is φ = 3491204928000.

The previous prime is 13443321345539. The next prime is 13443321345541. The reversal of 13443321345540 is 4554312334431.

It is an interprime number because it is at equal distance from previous prime (13443321345539) and next prime (13443321345541).

It is a junction number, because it is equal to n+sod(n) for n = 13443321345492 and 13443321345501.

It is not an unprimeable number, because it can be changed into a prime (13443321345541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17813700 + ... + 18553019.

It is an arithmetic number, because the mean of its divisors is an integer number (402470490240).

Almost surely, 2^{13443321345540} is an apocalyptic number.

13443321345540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443321345540 is an abundant number, since it is smaller than the sum of its proper divisors (25193845717500).

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

13443321345540 is a wasteful number, since it uses less digits than its factorization.

13443321345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36366893 (or 36366891 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 13443321345540 its reverse (4554312334431), we get a palindrome (17997633679971).

The spelling of 13443321345540 in words is "thirteen trillion, four hundred forty-three billion, three hundred twenty-one million, three hundred forty-five thousand, five hundred forty".