40033444432 has 80 divisors (see below), whose sum is σ = 83467996992. Its totient is φ = 18532546560.

The previous prime is 40033444421. The next prime is 40033444433. The reversal of 40033444432 is 23444433004.

It is a junction number, because it is equal to n+sod(n) for n = 40033444394 and 40033444403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40033444433) 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, 22104807 + ... + 22106617.

Almost surely, 2^40033444432 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 40033444432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41733998496).

40033444432 is an abundant number, since it is smaller than the sum of its proper divisors (43434552560).

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

40033444432 is a wasteful number, since it uses less digits than its factorization.

40033444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40033444432 its reverse (23444433004), we get a palindrome (63477877436).

The spelling of 40033444432 in words is "forty billion, thirty-three million, four hundred forty-four thousand, four hundred thirty-two".