327424772821 has 4 divisors (see below), whose sum is σ = 327692496672. Its totient is φ = 327157048972.

The previous prime is 327424772819. The next prime is 327424772833. The reversal of 327424772821 is 128277424723.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 327424772821 - 2¹ = 327424772819 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327424772221) by changing a digit.

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, 133860091 + ... + 133862536.

It is an arithmetic number, because the mean of its divisors is an integer number (81923124168).

Almost surely, 2^327424772821 is an apocalyptic number.

It is an amenable number.

327424772821 is a deficient number, since it is larger than the sum of its proper divisors (267723851).

327424772821 is a wasteful number, since it uses less digits than its factorization.

327424772821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267723850.

The product of its digits is 2107392, while the sum is 49.

The spelling of 327424772821 in words is "three hundred twenty-seven billion, four hundred twenty-four million, seven hundred seventy-two thousand, eight hundred twenty-one".