27288930257 has 2 divisors, whose sum is σ = 27288930258. Its totient is φ = 27288930256.

The previous prime is 27288930211. The next prime is 27288930259. The reversal of 27288930257 is 75203988272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16901040016 + 10387890241 = 130004^2 + 101921^2 .

It is a cyclic number.

It is not a de Polignac number, because 27288930257 - 2²² = 27284735953 is a prime.

Together with 27288930259, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27288930199 and 27288930208.

It is not a weakly prime, because it can be changed into another prime (27288930259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13644465128 + 13644465129.

It is an arithmetic number, because the mean of its divisors is an integer number (13644465129).

Almost surely, 2^27288930257 is an apocalyptic number.

It is an amenable number.

27288930257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27288930257 is an equidigital number, since it uses as much as digits as its factorization.

27288930257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 27288930257 in words is "twenty-seven billion, two hundred eighty-eight million, nine hundred thirty thousand, two hundred fifty-seven".