4040400000040 has 16 divisors (see below), whose sum is σ = 9090900000180. Its totient is φ = 1616160000000.

The previous prime is 4040400000031. The next prime is 4040400000067. The reversal of 4040400000040 is 400000040404.

4040400000040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3992667363556 + 47732636484 = 1998166^2 + 218478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50504999961 + ... + 50505000040.

Almost surely, 2^{4040400000040} is an apocalyptic number.

4040400000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040400000040 is an abundant number, since it is smaller than the sum of its proper divisors (5050500000140).

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

4040400000040 is a wasteful number, since it uses less digits than its factorization.

4040400000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010000012 (or 101010000008 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 4040400000040 its reverse (400000040404), we get a palindrome (4440400040444).

The spelling of 4040400000040 in words is "four trillion, forty billion, four hundred million, forty", and thus it is an aban number.