321441000641 has 2 divisors, whose sum is σ = 321441000642. Its totient is φ = 321441000640.

The previous prime is 321441000613. The next prime is 321441000649. The reversal of 321441000641 is 146000144123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235472415025 + 85968585616 = 485255^2 + 293204^2 .

It is a cyclic number.

It is not a de Polignac number, because 321441000641 - 2²⁶ = 321373891777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321441000641.

It is not a weakly prime, because it can be changed into another prime (321441000649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160720500320 + 160720500321.

It is an arithmetic number, because the mean of its divisors is an integer number (160720500321).

Almost surely, 2^321441000641 is an apocalyptic number.

It is an amenable number.

321441000641 is a deficient number, since it is larger than the sum of its proper divisors (1).

321441000641 is an equidigital number, since it uses as much as digits as its factorization.

321441000641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 321441000641 its reverse (146000144123), we get a palindrome (467441144764).

The spelling of 321441000641 in words is "three hundred twenty-one billion, four hundred forty-one million, six hundred forty-one", and thus it is an aban number.