12568536951822 has 80 divisors (see below), whose sum is σ = 28777447176192. Its totient is φ = 4098177570960.

The previous prime is 12568536951661. The next prime is 12568536951823. The reversal of 12568536951822 is 22815963586521.

It is a happy number.

12568536951822 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 8 + 53 + 69 + 518 + 2 + 2 = 666.

It is a super-2 number, since 2×12568536951822² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12568536951822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12568536951823) 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 39 ways as a sum of consecutive naturals, for example, 13804663 + ... + 14686925.

Almost surely, 2^{12568536951822} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12568536951822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14388723588096).

12568536951822 is an abundant number, since it is smaller than the sum of its proper divisors (16208910224370).

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

12568536951822 is a wasteful number, since it uses less digits than its factorization.

12568536951822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884195 (or 884186 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 63.

The spelling of 12568536951822 in words is "twelve trillion, five hundred sixty-eight billion, five hundred thirty-six million, nine hundred fifty-one thousand, eight hundred twenty-two".