400043244320224 has 96 divisors (see below), whose sum is σ = 808521521109120. Its totient is φ = 194750081851392.

The previous prime is 400043244320197. The next prime is 400043244320261. The reversal of 400043244320224 is 422023442340004.

It is a self number, because there is not a number n which added to its sum of digits gives 400043244320224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417297832 + ... + 418255384.

It is an arithmetic number, because the mean of its divisors is an integer number (8422099178220).

Almost surely, 2^{400043244320224} 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 400043244320224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404260760554560).

400043244320224 is an abundant number, since it is smaller than the sum of its proper divisors (408478276788896).

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

400043244320224 is a wasteful number, since it uses less digits than its factorization.

400043244320224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959052 (or 959044 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 400043244320224 its reverse (422023442340004), we get a palindrome (822066686660228).

The spelling of 400043244320224 in words is "four hundred trillion, forty-three billion, two hundred forty-four million, three hundred twenty thousand, two hundred twenty-four".