328841582661 has 24 divisors (see below), whose sum is σ = 500023571840. Its totient is φ = 207676742400.

The previous prime is 328841582569. The next prime is 328841582683. The reversal of 328841582661 is 166285148823.

328841582661 is a `hidden beast` number, since 328 + 8 + 4 + 1 + 58 + 266 + 1 = 666.

It is not a de Polignac number, because 328841582661 - 2²² = 328837388357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328841582598 and 328841582607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328841582261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3316596 + ... + 3414306.

Almost surely, 2^328841582661 is an apocalyptic number.

It is an amenable number.

328841582661 is a deficient number, since it is larger than the sum of its proper divisors (171181989179).

328841582661 is a wasteful number, since it uses less digits than its factorization.

328841582661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117417 (or 117414 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 328841582661 in words is "three hundred twenty-eight billion, eight hundred forty-one million, five hundred eighty-two thousand, six hundred sixty-one".