27808288873 has 2 divisors, whose sum is σ = 27808288874. Its totient is φ = 27808288872.

The previous prime is 27808288841. The next prime is 27808288889. The reversal of 27808288873 is 37888280872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18245795929 + 9562492944 = 135077^2 + 97788^2 .

It is a cyclic number.

It is not a de Polignac number, because 27808288873 - 2⁵ = 27808288841 is a prime.

It is a super-2 number, since 2×27808288873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27808288273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13904144436 + 13904144437.

It is an arithmetic number, because the mean of its divisors is an integer number (13904144437).

Almost surely, 2^27808288873 is an apocalyptic number.

It is an amenable number.

27808288873 is a deficient number, since it is larger than the sum of its proper divisors (1).

27808288873 is an equidigital number, since it uses as much as digits as its factorization.

27808288873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19267584, while the sum is 61.

The spelling of 27808288873 in words is "twenty-seven billion, eight hundred eight million, two hundred eighty-eight thousand, eight hundred seventy-three".