321401005504 has 28 divisors (see below), whose sum is σ = 638103624984. Its totient is φ = 160618989824.

The previous prime is 321401005489. The next prime is 321401005537. The reversal of 321401005504 is 405500104123.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146382 + ... + 1398925.

It is an arithmetic number, because the mean of its divisors is an integer number (22789415178).

Almost surely, 2^321401005504 is an apocalyptic number.

It is an amenable number.

321401005504 is a deficient number, since it is larger than the sum of its proper divisors (316702619480).

321401005504 is a wasteful number, since it uses less digits than its factorization.

321401005504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547292 (or 2547282 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 321401005504 its reverse (405500104123), we get a palindrome (726901109627).

The spelling of 321401005504 in words is "three hundred twenty-one billion, four hundred one million, five thousand, five hundred four".