12361644568 has 256 divisors, whose sum is σ = 31378636800. Its totient is φ = 4428587520.

The previous prime is 12361644563. The next prime is 12361644619. The reversal of 12361644568 is 86544616321.

12361644568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361644563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54456471 + ... + 54456697.

It is an arithmetic number, because the mean of its divisors is an integer number (122572800).

Almost surely, 2^12361644568 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 12361644568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15689318400).

12361644568 is an abundant number, since it is smaller than the sum of its proper divisors (19016992232).

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

12361644568 is a wasteful number, since it uses less digits than its factorization.

12361644568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 426 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 12361644568 in words is "twelve billion, three hundred sixty-one million, six hundred forty-four thousand, five hundred sixty-eight".