111988143960 has 1024 divisors, whose sum is σ = 471785472000. Its totient is φ = 20530298880.

The previous prime is 111988143947. The next prime is 111988143961. The reversal of 111988143960 is 69341889111.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111988143961) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 468569521 + ... + 468569759.

It is an arithmetic number, because the mean of its divisors is an integer number (460728000).

Almost surely, 2^111988143960 is an apocalyptic number.

111988143960 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 111988143960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235892736000).

111988143960 is an abundant number, since it is smaller than the sum of its proper divisors (359797328040).

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

111988143960 is a wasteful number, since it uses less digits than its factorization.

111988143960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The spelling of 111988143960 in words is "one hundred eleven billion, nine hundred eighty-eight million, one hundred forty-three thousand, nine hundred sixty".