13440213344 has 12 divisors (see below), whose sum is σ = 26460420084. Its totient is φ = 6720106656.

The previous prime is 13440213341. The next prime is 13440213349. The reversal of 13440213344 is 44331204431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440213341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210003302 + ... + 210003365.

It is an arithmetic number, because the mean of its divisors is an integer number (2205035007).

Almost surely, 2^13440213344 is an apocalyptic number.

It is an amenable number.

13440213344 is a deficient number, since it is larger than the sum of its proper divisors (13020206740).

13440213344 is an equidigital number, since it uses as much as digits as its factorization.

13440213344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420006677 (or 420006669 counting only the distinct ones).

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

Adding to 13440213344 its reverse (44331204431), we get a palindrome (57771417775).

The spelling of 13440213344 in words is "thirteen billion, four hundred forty million, two hundred thirteen thousand, three hundred forty-four".