6559139171 has 4 divisors (see below), whose sum is σ = 7063688352. Its totient is φ = 6054589992.

The previous prime is 6559139143. The next prime is 6559139299. The reversal of 6559139171 is 1719319556.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6559139171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6559139771) 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, 252274571 + ... + 252274596.

It is an arithmetic number, because the mean of its divisors is an integer number (1765922088).

Almost surely, 2^6559139171 is an apocalyptic number.

6559139171 is a deficient number, since it is larger than the sum of its proper divisors (504549181).

6559139171 is a wasteful number, since it uses less digits than its factorization.

6559139171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504549180.

The product of its digits is 255150, while the sum is 47.

The square root of 6559139171 is about 80988.5125866626. The cubic root of 6559139171 is about 1871.8984381728.

The spelling of 6559139171 in words is "six billion, five hundred fifty-nine million, one hundred thirty-nine thousand, one hundred seventy-one".