43312432512 has 128 divisors (see below), whose sum is σ = 115965187200. Its totient is φ = 14322954240.

The previous prime is 43312432511. The next prime is 43312432613. The reversal of 43312432512 is 21523421334.

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

It is a self number, because there is not a number n which added to its sum of digits gives 43312432512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43312432511) 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, 33138163 + ... + 33139469.

It is an arithmetic number, because the mean of its divisors is an integer number (905978025).

Almost surely, 2^43312432512 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 43312432512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57982593600).

43312432512 is an abundant number, since it is smaller than the sum of its proper divisors (72652754688).

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

43312432512 is a wasteful number, since it uses less digits than its factorization.

43312432512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944 (or 1932 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

Adding to 43312432512 its reverse (21523421334), we get a palindrome (64835853846).

The spelling of 43312432512 in words is "forty-three billion, three hundred twelve million, four hundred thirty-two thousand, five hundred twelve".