111423686400 has 864 divisors, whose sum is σ = 444009289920. Its totient is φ = 27179089920.

The previous prime is 111423686377. The next prime is 111423686411. The reversal of 111423686400 is 4686324111.

111423686400 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 2 + 3 + 6 + 8 + 640 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

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 95 ways as a sum of consecutive naturals, for example, 433555072 + ... + 433555328.

Almost surely, 2^111423686400 is an apocalyptic number.

111423686400 is a gapful number since it is divisible by the number (10) 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 111423686400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222004644960).

111423686400 is an abundant number, since it is smaller than the sum of its proper divisors (332585603520).

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

111423686400 is a wasteful number, since it uses less digits than its factorization.

111423686400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 111423686400 in words is "one hundred eleven billion, four hundred twenty-three million, six hundred eighty-six thousand, four hundred".