13440234344 has 8 divisors (see below), whose sum is σ = 25200439410. Its totient is φ = 6720117168.

The previous prime is 13440234343. The next prime is 13440234361. The reversal of 13440234344 is 44343204431.

It can be written as a sum of positive squares in only one way, i.e., 11225402500 + 2214831844 = 105950^2 + 47062^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13440234344² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13440234344.

It is not an unprimeable number, because it can be changed into a prime (13440234343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840014639 + ... + 840014654.

Almost surely, 2^13440234344 is an apocalyptic number.

It is an amenable number.

13440234344 is a deficient number, since it is larger than the sum of its proper divisors (11760205066).

13440234344 is a wasteful number, since it uses less digits than its factorization.

13440234344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680029299 (or 1680029295 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 13440234344 its reverse (44343204431), we get a palindrome (57783438775).

The spelling of 13440234344 in words is "thirteen billion, four hundred forty million, two hundred thirty-four thousand, three hundred forty-four".