11560544689 has 2 divisors, whose sum is σ = 11560544690. Its totient is φ = 11560544688.

The previous prime is 11560544647. The next prime is 11560544701. The reversal of 11560544689 is 98644506511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8380487025 + 3180057664 = 91545^2 + 56392^2 .

It is an emirp because it is prime and its reverse (98644506511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11560544689 - 2¹¹ = 11560542641 is a prime.

It is a super-2 number, since 2×11560544689² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11560544789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780272344 + 5780272345.

It is an arithmetic number, because the mean of its divisors is an integer number (5780272345).

Almost surely, 2^11560544689 is an apocalyptic number.

It is an amenable number.

11560544689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11560544689 is an equidigital number, since it uses as much as digits as its factorization.

11560544689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 11560544689 in words is "eleven billion, five hundred sixty million, five hundred forty-four thousand, six hundred eighty-nine".