111444651136 has 128 divisors (see below), whose sum is σ = 273572127360. Its totient is φ = 44036628480.

The previous prime is 111444651127. The next prime is 111444651137. The reversal of 111444651136 is 631156444111.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 111444651095 and 111444651104.

It is not an unprimeable number, because it can be changed into a prime (111444651137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10909071 + ... + 10919281.

It is an arithmetic number, because the mean of its divisors is an integer number (2137282245).

Almost surely, 2^111444651136 is an apocalyptic number.

111444651136 is a gapful number since it is divisible by the number (16) 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 111444651136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136786063680).

111444651136 is an abundant number, since it is smaller than the sum of its proper divisors (162127476224).

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

111444651136 is a wasteful number, since it uses less digits than its factorization.

111444651136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182 (or 11170 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The spelling of 111444651136 in words is "one hundred eleven billion, four hundred forty-four million, six hundred fifty-one thousand, one hundred thirty-six".