328055821961 has 16 divisors (see below), whose sum is σ = 391375699968. Its totient is φ = 268859250000.

The previous prime is 328055821883. The next prime is 328055821991. The reversal of 328055821961 is 169128550823.

It is a cyclic number.

It is not a de Polignac number, because 328055821961 - 2¹⁴ = 328055805577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328055821991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11336 + ... + 810086.

It is an arithmetic number, because the mean of its divisors is an integer number (24460981248).

Almost surely, 2^328055821961 is an apocalyptic number.

It is an amenable number.

328055821961 is a deficient number, since it is larger than the sum of its proper divisors (63319878007).

328055821961 is a wasteful number, since it uses less digits than its factorization.

328055821961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801332.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 328055821961 in words is "three hundred twenty-eight billion, fifty-five million, eight hundred twenty-one thousand, nine hundred sixty-one".