327864191816 has 16 divisors (see below), whose sum is σ = 702566125440. Its totient is φ = 140513225040.

The previous prime is 327864191789. The next prime is 327864191909. The reversal of 327864191816 is 618191468723.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 5854717711 = 327864191816 / (3 + 2 + 7 + 8 + 6 + 4 + 1 + 9 + 1 + 8 + 1 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927358800 + ... + 2927358911.

It is an arithmetic number, because the mean of its divisors is an integer number (43910382840).

Almost surely, 2^327864191816 is an apocalyptic number.

It is an amenable number.

327864191816 is an abundant number, since it is smaller than the sum of its proper divisors (374701933624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

327864191816 is a wasteful number, since it uses less digits than its factorization.

327864191816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854717724 (or 5854717720 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 327864191816 in words is "three hundred twenty-seven billion, eight hundred sixty-four million, one hundred ninety-one thousand, eight hundred sixteen".