327816391689 has 12 divisors (see below), whose sum is σ = 475035118272. Its totient is φ = 217841544600.

The previous prime is 327816391687. The next prime is 327816391697. The reversal of 327816391689 is 986193618723.

327816391689 is a `hidden beast` number, since 327 + 8 + 163 + 91 + 68 + 9 = 666.

It is not a de Polignac number, because 327816391689 - 2¹ = 327816391687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (327816391687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58556757 + ... + 58562354.

It is an arithmetic number, because the mean of its divisors is an integer number (39586259856).

Almost surely, 2^327816391689 is an apocalyptic number.

It is an amenable number.

327816391689 is a deficient number, since it is larger than the sum of its proper divisors (147218726583).

327816391689 is a wasteful number, since it uses less digits than its factorization.

327816391689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117119428 (or 117119425 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 327816391689 in words is "three hundred twenty-seven billion, eight hundred sixteen million, three hundred ninety-one thousand, six hundred eighty-nine".