8356556538 has 64 divisors (see below), whose sum is σ = 20956924800. Its totient is φ = 2444964480.

The previous prime is 8356556519. The next prime is 8356556561.

8356556538 is a `hidden beast` number, since 8 + 3 + 56 + 5 + 56 + 538 = 666.

8356556538 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225331 + ... + 259782.

It is an arithmetic number, because the mean of its divisors is an integer number (327451950).

Almost surely, 2^8356556538 is an apocalyptic number.

8356556538 is an abundant number, since it is smaller than the sum of its proper divisors (12600368262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8356556538 is a wasteful number, since it uses less digits than its factorization.

8356556538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485164 (or 485158 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 54.

The square root of 8356556538 is about 91414.2031524642. The cubic root of 8356556538 is about 2029.2822280588.

The spelling of 8356556538 in words is "eight billion, three hundred fifty-six million, five hundred fifty-six thousand, five hundred thirty-eight".