27664221323 has 2 divisors, whose sum is σ = 27664221324. Its totient is φ = 27664221322.

The previous prime is 27664221307. The next prime is 27664221337. The reversal of 27664221323 is 32312246672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27664221323 - 2⁴ = 27664221307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (27664221523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13832110661 + 13832110662.

It is an arithmetic number, because the mean of its divisors is an integer number (13832110662).

Almost surely, 2^27664221323 is an apocalyptic number.

27664221323 is a deficient number, since it is larger than the sum of its proper divisors (1).

27664221323 is an equidigital number, since it uses as much as digits as its factorization.

27664221323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 38.

Adding to 27664221323 its reverse (32312246672), we get a palindrome (59976467995).

The spelling of 27664221323 in words is "twenty-seven billion, six hundred sixty-four million, two hundred twenty-one thousand, three hundred twenty-three".