27220389673 has 2 divisors, whose sum is σ = 27220389674. Its totient is φ = 27220389672.

The previous prime is 27220389667. The next prime is 27220389719. The reversal of 27220389673 is 37698302272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14249913129 + 12970476544 = 119373^2 + 113888^2 .

It is a cyclic number.

It is not a de Polignac number, because 27220389673 - 2²⁹ = 26683518761 is a prime.

It is a super-2 number, since 2×27220389673² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27220389773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13610194836 + 13610194837.

It is an arithmetic number, because the mean of its divisors is an integer number (13610194837).

Almost surely, 2^27220389673 is an apocalyptic number.

It is an amenable number.

27220389673 is a deficient number, since it is larger than the sum of its proper divisors (1).

27220389673 is an equidigital number, since it uses as much as digits as its factorization.

27220389673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 27220389673 in words is "twenty-seven billion, two hundred twenty million, three hundred eighty-nine thousand, six hundred seventy-three".