8158136756 has 24 divisors (see below), whose sum is σ = 17799571776. Its totient is φ = 3178494720.

The previous prime is 8158136747. The next prime is 8158136759. The reversal of 8158136756 is 6576318518.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8158136759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13243421 + ... + 13244036.

It is an arithmetic number, because the mean of its divisors is an integer number (741648824).

Almost surely, 2^8158136756 is an apocalyptic number.

It is an amenable number.

8158136756 is an abundant number, since it is smaller than the sum of its proper divisors (9641435020).

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

8158136756 is a wasteful number, since it uses less digits than its factorization.

8158136756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26487479 (or 26487477 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 8158136756 is about 90322.4045074089. The cubic root of 8158136756 is about 2013.0921734913.

The spelling of 8158136756 in words is "eight billion, one hundred fifty-eight million, one hundred thirty-six thousand, seven hundred fifty-six".