27897254271 has 12 divisors (see below), whose sum is σ = 40319043648. Its totient is φ = 18587549664.

The previous prime is 27897254267. The next prime is 27897254291. The reversal of 27897254271 is 17245279872.

27897254271 is a `hidden beast` number, since 2 + 7 + 8 + 97 + 2 + 542 + 7 + 1 = 666.

It is not a de Polignac number, because 27897254271 - 2² = 27897254267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27897254291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 868335 + ... + 899888.

It is an arithmetic number, because the mean of its divisors is an integer number (3359920304).

Almost surely, 2^27897254271 is an apocalyptic number.

27897254271 is a deficient number, since it is larger than the sum of its proper divisors (12421789377).

27897254271 is a wasteful number, since it uses less digits than its factorization.

27897254271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769982 (or 1769979 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The spelling of 27897254271 in words is "twenty-seven billion, eight hundred ninety-seven million, two hundred fifty-four thousand, two hundred seventy-one".