11663221154 has 8 divisors (see below), whose sum is σ = 18840588060. Its totient is φ = 5383025136.

The previous prime is 11663221151. The next prime is 11663221201. The reversal of 11663221154 is 45112236611.

11663221154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10216559929 + 1446661225 = 101077^2 + 38035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11663221154² (a number of 21 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 11663221154.

It is not an unprimeable number, because it can be changed into a prime (11663221151) 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 3 ways as a sum of consecutive naturals, for example, 224292689 + ... + 224292740.

Almost surely, 2^11663221154 is an apocalyptic number.

11663221154 is a deficient number, since it is larger than the sum of its proper divisors (7177366906).

11663221154 is a wasteful number, since it uses less digits than its factorization.

11663221154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448585444.

The product of its digits is 8640, while the sum is 32.

Adding to 11663221154 its reverse (45112236611), we get a palindrome (56775457765).

The spelling of 11663221154 in words is "eleven billion, six hundred sixty-three million, two hundred twenty-one thousand, one hundred fifty-four".