43421435112320 has 128 divisors (see below), whose sum is σ = 105522086422080. Its totient is φ = 17081251430400.

The previous prime is 43421435112287. The next prime is 43421435112323. The reversal of 43421435112320 is 2321153412434.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421435112323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268162904 + ... + 268324776.

Almost surely, 2^{43421435112320} is an apocalyptic number.

43421435112320 is a gapful number since it is divisible by the number (40) 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 43421435112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52761043211040).

43421435112320 is an abundant number, since it is smaller than the sum of its proper divisors (62100651309760).

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

43421435112320 is a wasteful number, since it uses less digits than its factorization.

43421435112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168824 (or 168812 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 43421435112320 its reverse (2321153412434), we get a palindrome (45742588524754).

The spelling of 43421435112320 in words is "forty-three trillion, four hundred twenty-one billion, four hundred thirty-five million, one hundred twelve thousand, three hundred twenty".