27065332321 has 4 divisors (see below), whose sum is σ = 27436090372. Its totient is φ = 26694574272.

The previous prime is 27065332277. The next prime is 27065332379. The reversal of 27065332321 is 12323356072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19331009296 + 7734323025 = 139036^2 + 87945^2 .

It is a cyclic number.

It is not a de Polignac number, because 27065332321 - 2¹⁹ = 27064808033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27065332381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185378916 + ... + 185379061.

It is an arithmetic number, because the mean of its divisors is an integer number (6859022593).

Almost surely, 2^27065332321 is an apocalyptic number.

It is an amenable number.

27065332321 is a deficient number, since it is larger than the sum of its proper divisors (370758051).

27065332321 is an equidigital number, since it uses as much as digits as its factorization.

27065332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370758050.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 27065332321 its reverse (12323356072), we get a palindrome (39388688393).

The spelling of 27065332321 in words is "twenty-seven billion, sixty-five million, three hundred thirty-two thousand, three hundred twenty-one".