111216666544 has 20 divisors (see below), whose sum is σ = 217389217896. Its totient is φ = 55116223232.

The previous prime is 111216666541. The next prime is 111216666557. The reversal of 111216666544 is 445666612111.

111216666544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 111216666544.

It is not an unprimeable number, because it can be changed into a prime (111216666541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30755014 + ... + 30758629.

Almost surely, 2^111216666544 is an apocalyptic number.

It is an amenable number.

111216666544 is a deficient number, since it is larger than the sum of its proper divisors (106172551352).

111216666544 is a wasteful number, since it uses less digits than its factorization.

111216666544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61513764 (or 61513758 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The spelling of 111216666544 in words is "one hundred eleven billion, two hundred sixteen million, six hundred sixty-six thousand, five hundred forty-four".