323920657589 has 2 divisors, whose sum is σ = 323920657590. Its totient is φ = 323920657588.

The previous prime is 323920657553. The next prime is 323920657609. The reversal of 323920657589 is 985756029323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323798555089 + 122102500 = 569033^2 + 11050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323920657589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323920657549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161960328794 + 161960328795.

It is an arithmetic number, because the mean of its divisors is an integer number (161960328795).

Almost surely, 2^323920657589 is an apocalyptic number.

It is an amenable number.

323920657589 is a deficient number, since it is larger than the sum of its proper divisors (1).

323920657589 is an equidigital number, since it uses as much as digits as its factorization.

323920657589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24494400, while the sum is 59.

The spelling of 323920657589 in words is "three hundred twenty-three billion, nine hundred twenty million, six hundred fifty-seven thousand, five hundred eighty-nine".