111444975900 has 216 divisors, whose sum is σ = 369967153920. Its totient is φ = 29086050240.

The previous prime is 111444975877. The next prime is 111444975911. The reversal of 111444975900 is 9579444111.

111444975900 is a `hidden beast` number, since 1 + 1 + 14 + 4 + 49 + 7 + 590 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1093311 + ... + 1190889.

Almost surely, 2^111444975900 is an apocalyptic number.

111444975900 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 111444975900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184983576960).

111444975900 is an abundant number, since it is smaller than the sum of its proper divisors (258522178020).

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

111444975900 is a wasteful number, since it uses less digits than its factorization.

111444975900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97655 (or 97636 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 111444975900 in words is "one hundred eleven billion, four hundred forty-four million, nine hundred seventy-five thousand, nine hundred".