328505376785 has 8 divisors (see below), whose sum is σ = 395465899560. Its totient is φ = 261964669824.

The previous prime is 328505376769. The next prime is 328505376817. The reversal of 328505376785 is 587673505823.

It can be written as a sum of positive squares in 4 ways, for example, as 17410274704 + 311095102081 = 131948^2 + 557759^2 .

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 328505376785 - 2⁴ = 328505376769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104952230 + ... + 104955359.

It is an arithmetic number, because the mean of its divisors is an integer number (49433237445).

Almost surely, 2^328505376785 is an apocalyptic number.

It is an amenable number.

328505376785 is a deficient number, since it is larger than the sum of its proper divisors (66960522775).

328505376785 is a wasteful number, since it uses less digits than its factorization.

328505376785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209907907.

The product of its (nonzero) digits is 42336000, while the sum is 59.

The spelling of 328505376785 in words is "three hundred twenty-eight billion, five hundred five million, three hundred seventy-six thousand, seven hundred eighty-five".