327609165685 has 4 divisors (see below), whose sum is σ = 393130998828. Its totient is φ = 262087332544.

The previous prime is 327609165659. The next prime is 327609165703. The reversal of 327609165685 is 586561906723.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586561906723 = 13 ⋅45120146671.

It can be written as a sum of positive squares in 2 ways, for example, as 89737391844 + 237871773841 = 299562^2 + 487721^2 .

It is a cyclic number.

It is not a de Polignac number, because 327609165685 - 2¹⁹ = 327608641397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 32760916564 + ... + 32760916573.

It is an arithmetic number, because the mean of its divisors is an integer number (98282749707).

Almost surely, 2^327609165685 is an apocalyptic number.

It is an amenable number.

327609165685 is a deficient number, since it is larger than the sum of its proper divisors (65521833143).

327609165685 is an equidigital number, since it uses as much as digits as its factorization.

327609165685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65521833142.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 327609165685 in words is "three hundred twenty-seven billion, six hundred nine million, one hundred sixty-five thousand, six hundred eighty-five".