8136422856 has 96 divisors (see below), whose sum is σ = 22335844440. Its totient is φ = 2675441664.

The previous prime is 8136422837. The next prime is 8136422857. The reversal of 8136422856 is 6582246318.

8136422856 is a `hidden beast` number, since 8 + 1 + 364 + 2 + 285 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3379561956 + 4756860900 = 58134^2 + 68970^2 .

It is not an unprimeable number, because it can be changed into a prime (8136422857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2351880 + ... + 2355336.

Almost surely, 2^8136422856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8136422856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11167922220).

8136422856 is an abundant number, since it is smaller than the sum of its proper divisors (14199421584).

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

8136422856 is a wasteful number, since it uses less digits than its factorization.

8136422856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903 (or 3896 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 8136422856 is about 90202.1222366747. The cubic root of 8136422856 is about 2011.3045544706.

The spelling of 8136422856 in words is "eight billion, one hundred thirty-six million, four hundred twenty-two thousand, eight hundred fifty-six".