321040013105504 has 96 divisors (see below), whose sum is σ = 788024129469696. Its totient is φ = 125077854021120.

The previous prime is 321040013105503. The next prime is 321040013105563. The reversal of 321040013105504 is 405501310040123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321040013105503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116049899 + ... + 118784085.

It is an arithmetic number, because the mean of its divisors is an integer number (8208584681976).

Almost surely, 2^{321040013105504} is an apocalyptic number.

It is an amenable number.

321040013105504 is an abundant number, since it is smaller than the sum of its proper divisors (466984116364192).

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

321040013105504 is a wasteful number, since it uses less digits than its factorization.

321040013105504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781868 (or 2781860 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 321040013105504 its reverse (405501310040123), we get a palindrome (726541323145627).

The spelling of 321040013105504 in words is "three hundred twenty-one trillion, forty billion, thirteen million, one hundred five thousand, five hundred four".