12426536221164 has 144 divisors (see below), whose sum is σ = 35819934067008. Its totient is φ = 3598406774784.

The previous prime is 12426536221163. The next prime is 12426536221171. The reversal of 12426536221164 is 46112263562421.

It is a happy number.

12426536221164 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 6 + 5 + 3 + 622 + 1 + 16 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (12426536221163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156590104 + ... + 156669440.

It is an arithmetic number, because the mean of its divisors is an integer number (248749542132).

Almost surely, 2^{12426536221164} 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 12426536221164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17909967033504).

12426536221164 is an abundant number, since it is smaller than the sum of its proper divisors (23393397845844).

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

12426536221164 is a wasteful number, since it uses less digits than its factorization.

12426536221164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99064 (or 99059 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

Adding to 12426536221164 its reverse (46112263562421), we get a palindrome (58538799783585).

The spelling of 12426536221164 in words is "twelve trillion, four hundred twenty-six billion, five hundred thirty-six million, two hundred twenty-one thousand, one hundred sixty-four".