8556238117 has 4 divisors (see below), whose sum is σ = 9778557856. Its totient is φ = 7333918380.

The previous prime is 8556238109. The next prime is 8556238151. The reversal of 8556238117 is 7118326558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8556238117 - 2³ = 8556238109 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 (8556232117) 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 3 ways as a sum of consecutive naturals, for example, 611159859 + ... + 611159872.

It is an arithmetic number, because the mean of its divisors is an integer number (2444639464).

Almost surely, 2^8556238117 is an apocalyptic number.

It is an amenable number.

8556238117 is a deficient number, since it is larger than the sum of its proper divisors (1222319739).

8556238117 is a wasteful number, since it uses less digits than its factorization.

8556238117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222319738.

The product of its digits is 403200, while the sum is 46.

The square root of 8556238117 is about 92499.9357675453. The cubic root of 8556238117 is about 2045.3185354369.

The spelling of 8556238117 in words is "eight billion, five hundred fifty-six million, two hundred thirty-eight thousand, one hundred seventeen".