11563660545 has 16 divisors (see below), whose sum is σ = 18504024000. Its totient is φ = 6166563264.

The previous prime is 11563660529. The next prime is 11563660567. The reversal of 11563660545 is 54506636511.

11563660545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11563660545 - 2⁴ = 11563660529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11563660497 and 11563660506.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 102831 + ... + 183579.

It is an arithmetic number, because the mean of its divisors is an integer number (1156501500).

Almost surely, 2^11563660545 is an apocalyptic number.

11563660545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11563660545 is a deficient number, since it is larger than the sum of its proper divisors (6940363455).

11563660545 is an equidigital number, since it uses as much as digits as its factorization.

11563660545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90304.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 11563660545 in words is "eleven billion, five hundred sixty-three million, six hundred sixty thousand, five hundred forty-five".