111455400168 has 256 divisors, whose sum is σ = 358416576000. Its totient is φ = 31433121792.

The previous prime is 111455400151. The next prime is 111455400191. The reversal of 111455400168 is 861004554111.

111455400168 is a `hidden beast` number, since 1 + 1 + 1 + 455 + 40 + 0 + 168 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74651230 + ... + 74652722.

It is an arithmetic number, because the mean of its divisors is an integer number (1400064750).

Almost surely, 2^111455400168 is an apocalyptic number.

111455400168 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 111455400168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179208288000).

111455400168 is an abundant number, since it is smaller than the sum of its proper divisors (246961175832).

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

111455400168 is a wasteful number, since it uses less digits than its factorization.

111455400168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

Adding to 111455400168 its reverse (861004554111), we get a palindrome (972459954279).

The spelling of 111455400168 in words is "one hundred eleven billion, four hundred fifty-five million, four hundred thousand, one hundred sixty-eight".