11644845587 has 8 divisors (see below), whose sum is σ = 11721803856. Its totient is φ = 11567922912.

The previous prime is 11644845577. The next prime is 11644845599. The reversal of 11644845587 is 78554844611.

It is a happy number.

11644845587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11644845587 - 2²⁸ = 11376410131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11644845577) 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 7 ways as a sum of consecutive naturals, for example, 1080608 + ... + 1091330.

It is an arithmetic number, because the mean of its divisors is an integer number (1465225482).

Almost surely, 2^11644845587 is an apocalyptic number.

11644845587 is a deficient number, since it is larger than the sum of its proper divisors (76958269).

11644845587 is a wasteful number, since it uses less digits than its factorization.

11644845587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17797.

The product of its digits is 4300800, while the sum is 53.

The spelling of 11644845587 in words is "eleven billion, six hundred forty-four million, eight hundred forty-five thousand, five hundred eighty-seven".