321433112003440 has 40 divisors (see below), whose sum is σ = 754731312015168. Its totient is φ = 127300242374400.

The previous prime is 321433112003413. The next prime is 321433112003513. The reversal of 321433112003440 is 44300211334123.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19890654792 + ... + 19890670951.

Almost surely, 2^{321433112003440} is an apocalyptic number.

It is an amenable number.

321433112003440 is an abundant number, since it is smaller than the sum of its proper divisors (433298200011728).

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

321433112003440 is a wasteful number, since it uses less digits than its factorization.

321433112003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39781325857 (or 39781325851 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321433112003440 its reverse (44300211334123), we get a palindrome (365733323337563).

The spelling of 321433112003440 in words is "three hundred twenty-one trillion, four hundred thirty-three billion, one hundred twelve million, three thousand, four hundred forty".