12536242136 has 64 divisors (see below), whose sum is σ = 27364884480. Its totient is φ = 5320788480.

The previous prime is 12536242099. The next prime is 12536242139. The reversal of 12536242136 is 63124263521.

It is a junction number, because it is equal to n+sod(n) for n = 12536242096 and 12536242105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12536242139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157001 + ... + 222983.

It is an arithmetic number, because the mean of its divisors is an integer number (427576320).

Almost surely, 2^12536242136 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 12536242136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13682442240).

12536242136 is an abundant number, since it is smaller than the sum of its proper divisors (14828642344).

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

12536242136 is a wasteful number, since it uses less digits than its factorization.

12536242136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66144 (or 66140 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The spelling of 12536242136 in words is "twelve billion, five hundred thirty-six million, two hundred forty-two thousand, one hundred thirty-six".