328278662021 has 8 divisors (see below), whose sum is σ = 334683644640. Its totient is φ = 321901710768.

The previous prime is 328278662011. The next prime is 328278662051. The reversal of 328278662021 is 120266872823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328278662021 - 2⁶ = 328278661957 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 (328278662011) 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 in 7 ways as a sum of consecutive naturals, for example, 6984191 + ... + 7031036.

It is an arithmetic number, because the mean of its divisors is an integer number (41835455580).

Almost surely, 2^328278662021 is an apocalyptic number.

It is an amenable number.

328278662021 is a deficient number, since it is larger than the sum of its proper divisors (6404982619).

328278662021 is a wasteful number, since it uses less digits than its factorization.

328278662021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14015683.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 328278662021 in words is "three hundred twenty-eight billion, two hundred seventy-eight million, six hundred sixty-two thousand, twenty-one".