43040044032 has 132 divisors (see below), whose sum is σ = 121864951680. Its totient is φ = 13502480384.

The previous prime is 43040044031. The next prime is 43040044037. The reversal of 43040044032 is 23044004034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 43040043993 and 43040044011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040044031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863569 + ... + 912047.

Almost surely, 2^43040044032 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 43040044032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60932475840).

43040044032 is an abundant number, since it is smaller than the sum of its proper divisors (78824907648).

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

43040044032 is a wasteful number, since it uses less digits than its factorization.

43040044032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48536 (or 48501 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 43040044032 its reverse (23044004034), we get a palindrome (66084048066).

The spelling of 43040044032 in words is "forty-three billion, forty million, forty-four thousand, thirty-two".