27321227389 has 2 divisors, whose sum is σ = 27321227390. Its totient is φ = 27321227388.

The previous prime is 27321227377. The next prime is 27321227393. The reversal of 27321227389 is 98372212372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21689925625 + 5631301764 = 147275^2 + 75042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27321227389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27321227789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13660613694 + 13660613695.

It is an arithmetic number, because the mean of its divisors is an integer number (13660613695).

Almost surely, 2^27321227389 is an apocalyptic number.

It is an amenable number.

27321227389 is a deficient number, since it is larger than the sum of its proper divisors (1).

27321227389 is an equidigital number, since it uses as much as digits as its factorization.

27321227389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The spelling of 27321227389 in words is "twenty-seven billion, three hundred twenty-one million, two hundred twenty-seven thousand, three hundred eighty-nine".