111654012672 has 216 divisors, whose sum is σ = 333590733840. Its totient is φ = 35916539904.

The previous prime is 111654012661. The next prime is 111654012697. The reversal of 111654012672 is 276210456111.

111654012672 is a `hidden beast` number, since 1 + 1 + 165 + 401 + 26 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56191263 + ... + 56193249.

Almost surely, 2^111654012672 is an apocalyptic number.

111654012672 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 111654012672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166795366920).

111654012672 is an abundant number, since it is smaller than the sum of its proper divisors (221936721168).

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

111654012672 is an frugal number, since it uses more digits than its factorization.

111654012672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

Adding to 111654012672 its reverse (276210456111), we get a palindrome (387864468783).

The spelling of 111654012672 in words is "one hundred eleven billion, six hundred fifty-four million, twelve thousand, six hundred seventy-two".