328639936823 has 4 divisors (see below), whose sum is σ = 358516294728. Its totient is φ = 298763578920.

The previous prime is 328639936759. The next prime is 328639936829.

328639936823 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328639936823 - 2⁶ = 328639936759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328639936829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14938178936 + ... + 14938178957.

It is an arithmetic number, because the mean of its divisors is an integer number (89629073682).

Almost surely, 2^328639936823 is an apocalyptic number.

328639936823 is a deficient number, since it is larger than the sum of its proper divisors (29876357905).

328639936823 is a wasteful number, since it uses less digits than its factorization.

328639936823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29876357904.

The product of its digits is 60466176, while the sum is 62.

The spelling of 328639936823 in words is "three hundred twenty-eight billion, six hundred thirty-nine million, nine hundred thirty-six thousand, eight hundred twenty-three".