111989266272 has 144 divisors (see below), whose sum is σ = 349438825008. Its totient is φ = 33808020480.

The previous prime is 111989266241. The next prime is 111989266313. The reversal of 111989266272 is 272662989111.

It is a happy number.

111989266272 is a `hidden beast` number, since 1 + 1 + 1 + 9 + 8 + 9 + 2 + 6 + 627 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83754 + ... + 480617.

It is an arithmetic number, because the mean of its divisors is an integer number (2426658507).

Almost surely, 2^111989266272 is an apocalyptic number.

111989266272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111989266272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174719412504).

111989266272 is an abundant number, since it is smaller than the sum of its proper divisors (237449558736).

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

111989266272 is a wasteful number, since it uses less digits than its factorization.

111989266272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564453 (or 564442 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The spelling of 111989266272 in words is "one hundred eleven billion, nine hundred eighty-nine million, two hundred sixty-six thousand, two hundred seventy-two".