12542636036 has 48 divisors (see below), whose sum is σ = 25948070400. Its totient is φ = 5301737280.

The previous prime is 12542636033. The next prime is 12542636047. The reversal of 12542636036 is 63063624521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12542636033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37541 + ... + 162771.

It is an arithmetic number, because the mean of its divisors is an integer number (540584800).

Almost surely, 2^12542636036 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 12542636036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12974035200).

12542636036 is an abundant number, since it is smaller than the sum of its proper divisors (13405434364).

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

12542636036 is a wasteful number, since it uses less digits than its factorization.

12542636036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125329 (or 125313 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 12542636036 in words is "twelve billion, five hundred forty-two million, six hundred thirty-six thousand, thirty-six".