40032223440 has 80 divisors (see below), whose sum is σ = 135381710016. Its totient is φ = 9704780800.

The previous prime is 40032223433. The next prime is 40032223493. The reversal of 40032223440 is 4432223004.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 40032223440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7579221 + ... + 7584500.

Almost surely, 2^40032223440 is an apocalyptic number.

40032223440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40032223440 is an abundant number, since it is smaller than the sum of its proper divisors (95349486576).

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

40032223440 is a wasteful number, since it uses less digits than its factorization.

40032223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15163748 (or 15163742 counting only the distinct ones).

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

Adding to 40032223440 its reverse (4432223004), we get a palindrome (44464446444).

The spelling of 40032223440 in words is "forty billion, thirty-two million, two hundred twenty-three thousand, four hundred forty".