40004000004 has 48 divisors (see below), whose sum is σ = 100759720320. Its totient is φ = 12315072000.

The previous prime is 40003999963. The next prime is 40004000077. The reversal of 40004000004 is 40000040004.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 2490997 + ... + 2507004.

It is an arithmetic number, because the mean of its divisors is an integer number (2099160840).

Almost surely, 2^40004000004 is an apocalyptic number.

It is an amenable number.

40004000004 is an abundant number, since it is smaller than the sum of its proper divisors (60755720316).

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

40004000004 is a wasteful number, since it uses less digits than its factorization.

40004000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998060 (or 4998058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 40004000004 its reverse (40000040004), we get a palindrome (80004040008).

It can be divided in two parts, 4000 and 4000004, that added together give a palindrome (4004004).

The spelling of 40004000004 in words is "forty billion, four million, four", and thus it is an aban number and an eban number.