328188208887 has 36 divisors (see below), whose sum is σ = 595500381840. Its totient is φ = 170487377280.

The previous prime is 328188208883. The next prime is 328188208963. The reversal of 328188208887 is 788802881823.

It is not a de Polignac number, because 328188208887 - 2² = 328188208883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328188208883) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21518562 + ... + 21533807.

Almost surely, 2^328188208887 is an apocalyptic number.

328188208887 is a deficient number, since it is larger than the sum of its proper divisors (267312172953).

328188208887 is a wasteful number, since it uses less digits than its factorization.

328188208887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43052404 (or 43052390 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 63.

The spelling of 328188208887 in words is "three hundred twenty-eight billion, one hundred eighty-eight million, two hundred eight thousand, eight hundred eighty-seven".