111344211647 has 4 divisors (see below), whose sum is σ = 111362965560. Its totient is φ = 111325457736.

The previous prime is 111344211631. The next prime is 111344211659. The reversal of 111344211647 is 746112443111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746112443111 = 7 ⋅106587491873.

It is a cyclic number.

It is not a de Polignac number, because 111344211647 - 2⁴ = 111344211631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111344211247) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9368048 + ... + 9379925.

It is an arithmetic number, because the mean of its divisors is an integer number (27840741390).

Almost surely, 2^111344211647 is an apocalyptic number.

111344211647 is a deficient number, since it is larger than the sum of its proper divisors (18753913).

111344211647 is an equidigital number, since it uses as much as digits as its factorization.

111344211647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18753912.

The product of its digits is 16128, while the sum is 35.

Adding to 111344211647 its reverse (746112443111), we get a palindrome (857456654758).

The spelling of 111344211647 in words is "one hundred eleven billion, three hundred forty-four million, two hundred eleven thousand, six hundred forty-seven".