111666000500 has 96 divisors (see below), whose sum is σ = 257550209280. Its totient is φ = 42209270400.

The previous prime is 111666000491. The next prime is 111666000521. The reversal of 111666000500 is 5000666111.

It is a self number, because there is not a number n which added to its sum of digits gives 111666000500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 896006 + ... + 1012994.

It is an arithmetic number, because the mean of its divisors is an integer number (2682814680).

Almost surely, 2^111666000500 is an apocalyptic number.

111666000500 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 111666000500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128775104640).

111666000500 is an abundant number, since it is smaller than the sum of its proper divisors (145884208780).

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

111666000500 is a wasteful number, since it uses less digits than its factorization.

111666000500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117114 (or 117102 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 111666000500 its reverse (5000666111), we get a palindrome (116666666611).

The spelling of 111666000500 in words is "one hundred eleven billion, six hundred sixty-six million, five hundred", and thus it is an aban number.