27975554271 has 18 divisors (see below), whose sum is σ = 47006544312. Its totient is φ = 15986030760.

The previous prime is 27975554197. The next prime is 27975554287. The reversal of 27975554271 is 17245557972.

27975554271 is a `hidden beast` number, since 2 + 7 + 97 + 5 + 5 + 542 + 7 + 1 = 666.

It is not a de Polignac number, because 27975554271 - 2¹⁵ = 27975521503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27975564271) 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 in 17 ways as a sum of consecutive naturals, for example, 31717875 + ... + 31718756.

It is an arithmetic number, because the mean of its divisors is an integer number (2611474684).

Almost surely, 2^27975554271 is an apocalyptic number.

27975554271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27975554271 is a deficient number, since it is larger than the sum of its proper divisors (19030990041).

27975554271 is a wasteful number, since it uses less digits than its factorization.

27975554271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63436651 (or 63436641 counting only the distinct ones).

The product of its digits is 6174000, while the sum is 54.

The spelling of 27975554271 in words is "twenty-seven billion, nine hundred seventy-five million, five hundred fifty-four thousand, two hundred seventy-one".