321564312336 has 40 divisors (see below), whose sum is σ = 834432981760. Its totient is φ = 106707436416.

The previous prime is 321564312331. The next prime is 321564312337. The reversal of 321564312336 is 633213465123.

It is a junction number, because it is equal to n+sod(n) for n = 321564312294 and 321564312303.

It is not an unprimeable number, because it can be changed into a prime (321564312331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15010051 + ... + 15031458.

It is an arithmetic number, because the mean of its divisors is an integer number (20860824544).

Almost surely, 2^321564312336 is an apocalyptic number.

It is an amenable number.

321564312336 is an abundant number, since it is smaller than the sum of its proper divisors (512868669424).

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

321564312336 is a wasteful number, since it uses less digits than its factorization.

321564312336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30041743 (or 30041737 counting only the distinct ones).

The product of its digits is 233280, while the sum is 39.

Adding to 321564312336 its reverse (633213465123), we get a palindrome (954777777459).

The spelling of 321564312336 in words is "three hundred twenty-one billion, five hundred sixty-four million, three hundred twelve thousand, three hundred thirty-six".