11181745563 has 16 divisors (see below), whose sum is σ = 15798926880. Its totient is φ = 7010249216.

The previous prime is 11181745559. The next prime is 11181745567. The reversal of 11181745563 is 36554718111.

It is an interprime number because it is at equal distance from previous prime (11181745559) and next prime (11181745567).

It is a cyclic number.

It is not a de Polignac number, because 11181745563 - 2² = 11181745559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11181745567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26520 + ... + 151877.

It is an arithmetic number, because the mean of its divisors is an integer number (987432930).

Almost surely, 2^11181745563 is an apocalyptic number.

11181745563 is a deficient number, since it is larger than the sum of its proper divisors (4617181317).

11181745563 is a wasteful number, since it uses less digits than its factorization.

11181745563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179646.

The product of its digits is 100800, while the sum is 42.

The spelling of 11181745563 in words is "eleven billion, one hundred eighty-one million, seven hundred forty-five thousand, five hundred sixty-three".