329220682568 has 36 divisors (see below), whose sum is σ = 655790787915. Its totient is φ = 154914396928.

The previous prime is 329220682547. The next prime is 329220682643. The reversal of 329220682568 is 865286022923.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 325244371204 + 3976311364 = 570302^2 + 63058^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=405722.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27583130 + ... + 27595062.

Almost surely, 2^329220682568 is an apocalyptic number.

It is an amenable number.

329220682568 is a deficient number, since it is larger than the sum of its proper divisors (326570105347).

329220682568 is an frugal number, since it uses more digits than its factorization.

329220682568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23906 (or 11952 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 329220682568 in words is "three hundred twenty-nine billion, two hundred twenty million, six hundred eighty-two thousand, five hundred sixty-eight".