328520216717 has 32 divisors (see below), whose sum is σ = 411651293184. Its totient is φ = 254699827200.

The previous prime is 328520216683. The next prime is 328520216723. The reversal of 328520216717 is 717612025823.

It is not a de Polignac number, because 328520216717 - 2¹² = 328520212621 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 (328520216747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18018668 + ... + 18036890.

It is an arithmetic number, because the mean of its divisors is an integer number (12864102912).

Almost surely, 2^328520216717 is an apocalyptic number.

It is an amenable number.

328520216717 is a deficient number, since it is larger than the sum of its proper divisors (83131076467).

328520216717 is a wasteful number, since it uses less digits than its factorization.

328520216717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19409.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 328520216717 in words is "three hundred twenty-eight billion, five hundred twenty million, two hundred sixteen thousand, seven hundred seventeen".