13444432343320 has 128 divisors (see below), whose sum is σ = 34740708192000. Its totient is φ = 4631055137280.

The previous prime is 13444432343317. The next prime is 13444432343351. The reversal of 13444432343320 is 2334323444431.

It is a super-2 number, since 2×13444432343320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78523566 + ... + 78694594.

It is an arithmetic number, because the mean of its divisors is an integer number (271411782750).

Almost surely, 2^{13444432343320} is an apocalyptic number.

13444432343320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13444432343320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17370354096000).

13444432343320 is an abundant number, since it is smaller than the sum of its proper divisors (21296275848680).

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

13444432343320 is a wasteful number, since it uses less digits than its factorization.

13444432343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180473 (or 180469 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 40.

Adding to 13444432343320 its reverse (2334323444431), we get a palindrome (15778755787751).

The spelling of 13444432343320 in words is "thirteen trillion, four hundred forty-four billion, four hundred thirty-two million, three hundred forty-three thousand, three hundred twenty".