13444432343321 has 8 divisors (see below), whose sum is σ = 15365442189120. Its totient is φ = 11523516661008.

The previous prime is 13444432343317. The next prime is 13444432343351. The reversal of 13444432343321 is 12334323444431.

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

It is a cyclic number.

It is not a de Polignac number, because 13444432343321 - 2² = 13444432343317 is a prime.

It is a super-2 number, since 2×13444432343321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13444432343351) 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, 23234651 + ... + 23806256.

It is an arithmetic number, because the mean of its divisors is an integer number (1920680273640).

Almost surely, 2^{13444432343321} is an apocalyptic number.

It is an amenable number.

13444432343321 is a deficient number, since it is larger than the sum of its proper divisors (1921009845799).

13444432343321 is an equidigital number, since it uses as much as digits as its factorization.

13444432343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47081743.

The product of its digits is 995328, while the sum is 41.

Adding to 13444432343321 its reverse (12334323444431), we get a palindrome (25778755787752).

The spelling of 13444432343321 in words is "thirteen trillion, four hundred forty-four billion, four hundred thirty-two million, three hundred forty-three thousand, three hundred twenty-one".