40478844440832 has 144 divisors (see below), whose sum is σ = 123187544430720. Its totient is φ = 11559335510016.

The previous prime is 40478844440821. The next prime is 40478844440833. The reversal of 40478844440832 is 23804444887404.

It is not an unprimeable number, because it can be changed into a prime (40478844440833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8316294 + ... + 12252282.

Almost surely, 2^{40478844440832} is an apocalyptic number.

40478844440832 is a gapful number since it is divisible by the number (42) 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 40478844440832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61593772215360).

40478844440832 is an abundant number, since it is smaller than the sum of its proper divisors (82708699989888).

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

40478844440832 is a wasteful number, since it uses less digits than its factorization.

40478844440832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937928 (or 3937914 counting only the distinct ones).

The product of its (nonzero) digits is 88080384, while the sum is 60.

The spelling of 40478844440832 in words is "forty trillion, four hundred seventy-eight billion, eight hundred forty-four million, four hundred forty thousand, eight hundred thirty-two".