6538685271 has 4 divisors (see below), whose sum is σ = 8718247032. Its totient is φ = 4359123512.

The previous prime is 6538685189. The next prime is 6538685317. The reversal of 6538685271 is 1725868356.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6538685271 - 2⁷ = 6538685143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538685171) 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 3 ways as a sum of consecutive naturals, for example, 1089780876 + ... + 1089780881.

It is an arithmetic number, because the mean of its divisors is an integer number (2179561758).

Almost surely, 2^6538685271 is an apocalyptic number.

6538685271 is a deficient number, since it is larger than the sum of its proper divisors (2179561761).

6538685271 is a wasteful number, since it uses less digits than its factorization.

6538685271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179561760.

The product of its digits is 2419200, while the sum is 51.

The square root of 6538685271 is about 80862.1374377403. The cubic root of 6538685271 is about 1869.9506474626.

The spelling of 6538685271 in words is "six billion, five hundred thirty-eight million, six hundred eighty-five thousand, two hundred seventy-one".