321044133344440 has 64 divisors (see below), whose sum is σ = 788790743568000. Its totient is φ = 116628754496640.

The previous prime is 321044133344401. The next prime is 321044133344477. The reversal of 321044133344440 is 44443331440123.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 321044133344393 and 321044133344402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357572130 + ... + 358468849.

It is an arithmetic number, because the mean of its divisors is an integer number (12324855368250).

Almost surely, 2^{321044133344440} is an apocalyptic number.

It is an amenable number.

321044133344440 is an abundant number, since it is smaller than the sum of its proper divisors (467746610223560).

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

321044133344440 is a wasteful number, since it uses less digits than its factorization.

321044133344440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716042020 (or 716042016 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 40.

Adding to 321044133344440 its reverse (44443331440123), we get a palindrome (365487464784563).

The spelling of 321044133344440 in words is "three hundred twenty-one trillion, forty-four billion, one hundred thirty-three million, three hundred forty-four thousand, four hundred forty".