4000040444000 has 96 divisors (see below), whose sum is σ = 9915074822016. Its totient is φ = 1585856563200.

The previous prime is 4000040443967. The next prime is 4000040444011. The reversal of 4000040444000 is 4440400004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 3972824 + ... + 4876823.

It is an arithmetic number, because the mean of its divisors is an integer number (103282029396).

Almost surely, 2^{4000040444000} is an apocalyptic number.

4000040444000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4000040444000 is an abundant number, since it is smaller than the sum of its proper divisors (5915034378016).

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

4000040444000 is a wasteful number, since it uses less digits than its factorization.

4000040444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849785 (or 8849767 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 4000040444000 its reverse (4440400004), we get a palindrome (4004480844004).

The spelling of 4000040444000 in words is "four trillion, forty million, four hundred forty-four thousand".