111666383028 has 192 divisors, whose sum is σ = 310034995200. Its totient is φ = 34679715840.

The previous prime is 111666383009. The next prime is 111666383033. The reversal of 111666383028 is 820383666111.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 38544076 + ... + 38546972.

It is an arithmetic number, because the mean of its divisors is an integer number (1614765600).

Almost surely, 2^111666383028 is an apocalyptic number.

111666383028 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 111666383028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155017497600).

111666383028 is an abundant number, since it is smaller than the sum of its proper divisors (198368612172).

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

111666383028 is a wasteful number, since it uses less digits than its factorization.

111666383028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3359 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 111666383028 in words is "one hundred eleven billion, six hundred sixty-six million, three hundred eighty-three thousand, twenty-eight".