8278543871 has 4 divisors (see below), whose sum is σ = 8915354952. Its totient is φ = 7641732792.

The previous prime is 8278543843. The next prime is 8278543921. The reversal of 8278543871 is 1783458728.

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 8278543871 - 2³⁰ = 7204802047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278543811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318405521 + ... + 318405546.

It is an arithmetic number, because the mean of its divisors is an integer number (2228838738).

Almost surely, 2^8278543871 is an apocalyptic number.

8278543871 is a deficient number, since it is larger than the sum of its proper divisors (636811081).

8278543871 is a wasteful number, since it uses less digits than its factorization.

8278543871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636811080.

The product of its digits is 3010560, while the sum is 53.

The square root of 8278543871 is about 90986.5037849021. The cubic root of 8278543871 is about 2022.9476841329.

The spelling of 8278543871 in words is "eight billion, two hundred seventy-eight million, five hundred forty-three thousand, eight hundred seventy-one".