40404008032 has 24 divisors (see below), whose sum is σ = 80732639736. Its totient is φ = 19900480512.

The previous prime is 40404007997. The next prime is 40404008033. The reversal of 40404008032 is 23080040404.

It is a junction number, because it is equal to n+sod(n) for n = 40404007988 and 40404008006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404008033) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9420433 + ... + 9424720.

It is an arithmetic number, because the mean of its divisors is an integer number (3363859989).

Almost surely, 2^40404008032 is an apocalyptic number.

It is an amenable number.

40404008032 is a deficient number, since it is larger than the sum of its proper divisors (40328631704).

40404008032 is a wasteful number, since it uses less digits than its factorization.

40404008032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18845230 (or 18845222 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40404008032 its reverse (23080040404), we get a palindrome (63484048436).

The spelling of 40404008032 in words is "forty billion, four hundred four million, eight thousand, thirty-two".