111668205168 has 120 divisors (see below), whose sum is σ = 337836731232. Its totient is φ = 34228652544.

The previous prime is 111668205067. The next prime is 111668205169. The reversal of 111668205168 is 861502866111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111668205169) 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 23 ways as a sum of consecutive naturals, for example, 378930 + ... + 605742.

Almost surely, 2^111668205168 is an apocalyptic number.

111668205168 is a gapful number since it is divisible by the number (18) 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 111668205168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168918365616).

111668205168 is an abundant number, since it is smaller than the sum of its proper divisors (226168526064).

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

111668205168 is a wasteful number, since it uses less digits than its factorization.

111668205168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227103 (or 227094 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 111668205168 in words is "one hundred eleven billion, six hundred sixty-eight million, two hundred five thousand, one hundred sixty-eight".