321411042440 has 32 divisors (see below), whose sum is σ = 729809487000. Its totient is φ = 127384925184.

The previous prime is 321411042311. The next prime is 321411042443. The reversal of 321411042440 is 44240114123.

It can be written as a sum of positive squares in 4 ways, for example, as 295307470084 + 26103572356 = 543422^2 + 161566^2 .

It is not an unprimeable number, because it can be changed into a prime (321411042443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36854705 + ... + 36863424.

Almost surely, 2^321411042440 is an apocalyptic number.

It is an amenable number.

321411042440 is an abundant number, since it is smaller than the sum of its proper divisors (408398444560).

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

321411042440 is a wasteful number, since it uses less digits than its factorization.

321411042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73718249 (or 73718245 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 321411042440 its reverse (44240114123), we get a palindrome (365651156563).

The spelling of 321411042440 in words is "three hundred twenty-one billion, four hundred eleven million, forty-two thousand, four hundred forty".