123321324204544 has 40 divisors (see below), whose sum is σ = 246957998609520. Its totient is φ = 61521473135616.

The previous prime is 123321324204539. The next prime is 123321324204629. The reversal of 123321324204544 is 445402423123321.

It is a junction number, because it is equal to n+sod(n) for n = 123321324204497 and 123321324204506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271626414 + ... + 272080045.

It is an arithmetic number, because the mean of its divisors is an integer number (6173949965238).

Almost surely, 2^{123321324204544} is an apocalyptic number.

It is an amenable number.

123321324204544 is an abundant number, since it is smaller than the sum of its proper divisors (123636674404976).

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

123321324204544 is an frugal number, since it uses more digits than its factorization.

123321324204544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543706920 (or 543706904 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 123321324204544 its reverse (445402423123321), we get a palindrome (568723747327865).

The spelling of 123321324204544 in words is "one hundred twenty-three trillion, three hundred twenty-one billion, three hundred twenty-four million, two hundred four thousand, five hundred forty-four".