13441323440 has 40 divisors (see below), whose sum is σ = 31299798768. Its totient is φ = 5368147200.

The previous prime is 13441323397. The next prime is 13441323443. The reversal of 13441323440 is 4432314431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (13441323443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79211 + ... + 182090.

Almost surely, 2^13441323440 is an apocalyptic number.

13441323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13441323440 is an abundant number, since it is smaller than the sum of its proper divisors (17858475328).

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

13441323440 is a wasteful number, since it uses less digits than its factorization.

13441323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261957 (or 261951 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 13441323440 its reverse (4432314431), we get a palindrome (17873637871).

Subtracting from 13441323440 its reverse (4432314431), we obtain a palindrome (9009009009).

The spelling of 13441323440 in words is "thirteen billion, four hundred forty-one million, three hundred twenty-three thousand, four hundred forty".