12336436503638 has 48 divisors (see below), whose sum is σ = 20914860566016. Its totient is φ = 5444603255520.

The previous prime is 12336436503631. The next prime is 12336436503679. The reversal of 12336436503638 is 83630563463321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12336436503638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12336436503631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26723603 + ... + 27181313.

It is an arithmetic number, because the mean of its divisors is an integer number (435726261792).

Almost surely, 2^{12336436503638} is an apocalyptic number.

12336436503638 is a deficient number, since it is larger than the sum of its proper divisors (8578424062378).

12336436503638 is a wasteful number, since it uses less digits than its factorization.

12336436503638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461229 (or 461216 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 53.

Adding to 12336436503638 its reverse (83630563463321), we get a palindrome (95966999966959).

The spelling of 12336436503638 in words is "twelve trillion, three hundred thirty-six billion, four hundred thirty-six million, five hundred three thousand, six hundred thirty-eight".