111443661368 has 16 divisors (see below), whose sum is σ = 225030470280. Its totient is φ = 51435535968.

The previous prime is 111443661367. The next prime is 111443661379. The reversal of 111443661368 is 863166344111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111443661367) 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, 535786730 + ... + 535786937.

Almost surely, 2^111443661368 is an apocalyptic number.

It is an amenable number.

111443661368 is an abundant number, since it is smaller than the sum of its proper divisors (113586808912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111443661368 is a wasteful number, since it uses less digits than its factorization.

111443661368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071573686 (or 1071573682 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The spelling of 111443661368 in words is "one hundred eleven billion, four hundred forty-three million, six hundred sixty-one thousand, three hundred sixty-eight".