8106155136 has 128 divisors (see below), whose sum is σ = 25183800000. Its totient is φ = 2559817728.

The previous prime is 8106155131. The next prime is 8106155147. The reversal of 8106155136 is 6315516018.

8106155136 is a `hidden beast` number, since 8 + 1 + 0 + 615 + 5 + 1 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8106155136.

It is not an unprimeable number, because it can be changed into a prime (8106155131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3940 + ... + 127388.

Almost surely, 2^8106155136 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 8106155136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12591900000).

8106155136 is an abundant number, since it is smaller than the sum of its proper divisors (17077644864).

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

8106155136 is a wasteful number, since it uses less digits than its factorization.

8106155136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123491 (or 123473 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 8106155136 is about 90034.1887062909. The cubic root of 8106155136 is about 2008.8074190848.

The spelling of 8106155136 in words is "eight billion, one hundred six million, one hundred fifty-five thousand, one hundred thirty-six".