11008300561 has 4 divisors (see below), whose sum is σ = 11016908800. Its totient is φ = 10999692324.

The previous prime is 11008300543. The next prime is 11008300627. The reversal of 11008300561 is 16500380011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16500380011 = 21613 ⋅763447.

It is a cyclic number.

It is not a de Polignac number, because 11008300561 - 2⁵ = 11008300529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11008300361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4302201 + ... + 4304758.

It is an arithmetic number, because the mean of its divisors is an integer number (2754227200).

Almost surely, 2^11008300561 is an apocalyptic number.

It is an amenable number.

11008300561 is a deficient number, since it is larger than the sum of its proper divisors (8608239).

11008300561 is an equidigital number, since it uses as much as digits as its factorization.

11008300561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8608238.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 11008300561 its reverse (16500380011), we get a palindrome (27508680572).

The spelling of 11008300561 in words is "eleven billion, eight million, three hundred thousand, five hundred sixty-one".