321240243402444 has 12 divisors (see below), whose sum is σ = 749560567939064. Its totient is φ = 107080081134144.

The previous prime is 321240243402389. The next prime is 321240243402473. The reversal of 321240243402444 is 444204342042123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×321240243402444² (a number of 30 digits) contains 22 as substring.

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, 13385010141757 + ... + 13385010141780.

Almost surely, 2^{321240243402444} is an apocalyptic number.

It is an amenable number.

321240243402444 is an abundant number, since it is smaller than the sum of its proper divisors (428320324536620).

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

321240243402444 is a wasteful number, since it uses less digits than its factorization.

321240243402444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26770020283544 (or 26770020283542 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 321240243402444 its reverse (444204342042123), we get a palindrome (765444585444567).

The spelling of 321240243402444 in words is "three hundred twenty-one trillion, two hundred forty billion, two hundred forty-three million, four hundred two thousand, four hundred forty-four".