2004400400004 has 24 divisors (see below), whose sum is σ = 5196593629920. Its totient is φ = 668133466632.

The previous prime is 2004400399997. The next prime is 2004400400021. The reversal of 2004400400004 is 4000040044002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2004400400004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9279631374 + ... + 9279631589.

It is an arithmetic number, because the mean of its divisors is an integer number (216524734580).

Almost surely, 2^{2004400400004} is an apocalyptic number.

It is an amenable number.

2004400400004 is an abundant number, since it is smaller than the sum of its proper divisors (3192193229916).

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

2004400400004 is a wasteful number, since it uses less digits than its factorization.

2004400400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18559262976 (or 18559262968 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 2004400400004 its reverse (4000040044002), we get a palindrome (6004440444006).

The spelling of 2004400400004 in words is "two trillion, four billion, four hundred million, four hundred thousand, four".