13144434321 has 8 divisors (see below), whose sum is σ = 17546318560. Its totient is φ = 8752753152.

The previous prime is 13144434311. The next prime is 13144434343. The reversal of 13144434321 is 12343444131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13144434321 - 2¹⁸ = 13144172177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13144434311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547760 + ... + 2552913.

It is an arithmetic number, because the mean of its divisors is an integer number (2193289820).

Almost surely, 2^13144434321 is an apocalyptic number.

It is an amenable number.

13144434321 is a deficient number, since it is larger than the sum of its proper divisors (4401884239).

13144434321 is an equidigital number, since it uses as much as digits as its factorization.

13144434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101535.

The product of its digits is 13824, while the sum is 30.

Adding to 13144434321 its reverse (12343444131), we get a palindrome (25487878452).

The spelling of 13144434321 in words is "thirteen billion, one hundred forty-four million, four hundred thirty-four thousand, three hundred twenty-one".