400320324440004 has 48 divisors (see below), whose sum is σ = 940081152104640. Its totient is φ = 132584618127360.

The previous prime is 400320324439999. The next prime is 400320324440017. The reversal of 400320324440004 is 400044423023004.

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, 104955702 + ... + 108702989.

It is an arithmetic number, because the mean of its divisors is an integer number (19585024002180).

Almost surely, 2^{400320324440004} is an apocalyptic number.

It is an amenable number.

400320324440004 is an abundant number, since it is smaller than the sum of its proper divisors (539760827664636).

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

400320324440004 is a wasteful number, since it uses less digits than its factorization.

400320324440004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213659700 (or 213659698 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 400320324440004 its reverse (400044423023004), we get a palindrome (800364747463008).

The spelling of 400320324440004 in words is "four hundred trillion, three hundred twenty billion, three hundred twenty-four million, four hundred forty thousand, four".