27273221117 has 2 divisors, whose sum is σ = 27273221118. Its totient is φ = 27273221116.

The previous prime is 27273221099. The next prime is 27273221179. The reversal of 27273221117 is 71112237272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26403325081 + 869896036 = 162491^2 + 29494^2 .

It is a cyclic number.

It is not a de Polignac number, because 27273221117 - 2⁸ = 27273220861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27273221917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13636610558 + 13636610559.

It is an arithmetic number, because the mean of its divisors is an integer number (13636610559).

Almost surely, 2^27273221117 is an apocalyptic number.

It is an amenable number.

27273221117 is a deficient number, since it is larger than the sum of its proper divisors (1).

27273221117 is an equidigital number, since it uses as much as digits as its factorization.

27273221117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16464, while the sum is 35.

Adding to 27273221117 its reverse (71112237272), we get a palindrome (98385458389).

The spelling of 27273221117 in words is "twenty-seven billion, two hundred seventy-three million, two hundred twenty-one thousand, one hundred seventeen".