11643225066 has 64 divisors (see below), whose sum is σ = 28248192000. Its totient is φ = 3525476400.

The previous prime is 11643225053. The next prime is 11643225119. The reversal of 11643225066 is 66052234611.

11643225066 is a `hidden beast` number, since 1 + 1 + 643 + 2 + 2 + 5 + 0 + 6 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11643225066.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 824001 + ... + 838011.

It is an arithmetic number, because the mean of its divisors is an integer number (441378000).

Almost surely, 2^11643225066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11643225066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14124096000).

11643225066 is an abundant number, since it is smaller than the sum of its proper divisors (16604966934).

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

11643225066 is a wasteful number, since it uses less digits than its factorization.

11643225066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432 (or 15426 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 11643225066 its reverse (66052234611), we get a palindrome (77695459677).

The spelling of 11643225066 in words is "eleven billion, six hundred forty-three million, two hundred twenty-five thousand, sixty-six".