321441140243009 has 2 divisors, whose sum is σ = 321441140243010. Its totient is φ = 321441140243008.

The previous prime is 321441140242967. The next prime is 321441140243059. The reversal of 321441140243009 is 900342041144123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168069263007409 + 153371877235600 = 12964153^2 + 12384340^2 .

It is a cyclic number.

It is not a de Polignac number, because 321441140243009 - 2⁸ = 321441140242753 is a prime.

It is not a weakly prime, because it can be changed into another prime (321441140243059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160720570121504 + 160720570121505.

It is an arithmetic number, because the mean of its divisors is an integer number (160720570121505).

Almost surely, 2^{321441140243009} is an apocalyptic number.

It is an amenable number.

321441140243009 is a deficient number, since it is larger than the sum of its proper divisors (1).

321441140243009 is an equidigital number, since it uses as much as digits as its factorization.

321441140243009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 321441140243009 in words is "three hundred twenty-one trillion, four hundred forty-one billion, one hundred forty million, two hundred forty-three thousand, nine".