111663543249 has 32 divisors (see below), whose sum is σ = 172645724160. Its totient is φ = 71195115024.

The previous prime is 111663543227. The next prime is 111663543263. The reversal of 111663543249 is 942345366111.

111663543249 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 63 + 543 + 2 + 49 = 666.

It is not a de Polignac number, because 111663543249 - 2⁹ = 111663542737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111663543209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8130102 + ... + 8143824.

It is an arithmetic number, because the mean of its divisors is an integer number (5395178880).

Almost surely, 2^111663543249 is an apocalyptic number.

It is an amenable number.

111663543249 is a deficient number, since it is larger than the sum of its proper divisors (60982180911).

111663543249 is a wasteful number, since it uses less digits than its factorization.

111663543249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26858 (or 26852 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 111663543249 in words is "one hundred eleven billion, six hundred sixty-three million, five hundred forty-three thousand, two hundred forty-nine".