111563213545 has 16 divisors (see below), whose sum is σ = 153669116160. Its totient is φ = 76166420544.

The previous prime is 111563213513. The next prime is 111563213561. The reversal of 111563213545 is 545312365111.

It is a cyclic number.

It is not a de Polignac number, because 111563213545 - 2⁵ = 111563213513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6951637 + ... + 6967666.

It is an arithmetic number, because the mean of its divisors is an integer number (9604319760).

Almost surely, 2^111563213545 is an apocalyptic number.

It is an amenable number.

111563213545 is a deficient number, since it is larger than the sum of its proper divisors (42105902615).

111563213545 is a wasteful number, since it uses less digits than its factorization.

111563213545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919544.

The product of its digits is 54000, while the sum is 37.

Adding to 111563213545 its reverse (545312365111), we get a palindrome (656875578656).

The spelling of 111563213545 in words is "one hundred eleven billion, five hundred sixty-three million, two hundred thirteen thousand, five hundred forty-five".