40343232432 has 80 divisors (see below), whose sum is σ = 108846033408. Its totient is φ = 12851857920.

The previous prime is 40343232337. The next prime is 40343232443. The reversal of 40343232432 is 23423234304.

40343232432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40343232432.

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, 1301757 + ... + 1332387.

Almost surely, 2^40343232432 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 40343232432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54423016704).

40343232432 is an abundant number, since it is smaller than the sum of its proper divisors (68502800976).

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

40343232432 is a wasteful number, since it uses less digits than its factorization.

40343232432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31858 (or 31852 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 40343232432 its reverse (23423234304), we get a palindrome (63766466736).

The spelling of 40343232432 in words is "forty billion, three hundred forty-three million, two hundred thirty-two thousand, four hundred thirty-two".