1000043321344 has 48 divisors (see below), whose sum is σ = 2004820796160. Its totient is φ = 498715729920.

The previous prime is 1000043321297. The next prime is 1000043321353. The reversal of 1000043321344 is 4431233400001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146914 + ... + 1421854.

It is an arithmetic number, because the mean of its divisors is an integer number (41767099920).

Almost surely, 2^{1000043321344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000043321344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002410398080).

1000043321344 is an abundant number, since it is smaller than the sum of its proper divisors (1004777474816).

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

1000043321344 is an equidigital number, since it uses as much as digits as its factorization.

1000043321344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275346 (or 1275326 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1000043321344 its reverse (4431233400001), we get a palindrome (5431276721345).

The spelling of 1000043321344 in words is "one trillion, forty-three million, three hundred twenty-one thousand, three hundred forty-four".