320004040004 has 24 divisors (see below), whose sum is σ = 612618552000. Its totient is φ = 145051203680.

The previous prime is 320004039973. The next prime is 320004040007. The reversal of 320004040004 is 400040400023.

It is not an unprimeable number, because it can be changed into a prime (320004040007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10113479 + ... + 10145070.

It is an arithmetic number, because the mean of its divisors is an integer number (25525773000).

Almost surely, 2^320004040004 is an apocalyptic number.

It is an amenable number.

320004040004 is a deficient number, since it is larger than the sum of its proper divisors (292614511996).

320004040004 is a wasteful number, since it uses less digits than its factorization.

320004040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20258923 (or 20258921 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 320004040004 its reverse (400040400023), we get a palindrome (720044440027).

The spelling of 320004040004 in words is "three hundred twenty billion, four million, forty thousand, four".