8636747136 has 64 divisors (see below), whose sum is σ = 23069707200. Its totient is φ = 2862809600.

The previous prime is 8636747123. The next prime is 8636747153. The reversal of 8636747136 is 6317476368.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5911 + ... + 131561.

It is an arithmetic number, because the mean of its divisors is an integer number (360464175).

Almost surely, 2^8636747136 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 8636747136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11534853600).

8636747136 is an abundant number, since it is smaller than the sum of its proper divisors (14432960064).

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

8636747136 is a wasteful number, since it uses less digits than its factorization.

8636747136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125847 (or 125835 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The square root of 8636747136 is about 92934.1010393924. The cubic root of 8636747136 is about 2051.7135889104.

The spelling of 8636747136 in words is "eight billion, six hundred thirty-six million, seven hundred forty-seven thousand, one hundred thirty-six".