81112368 has 120 divisors (see below), whose sum is σ = 229794816. Its totient is φ = 24624000.

The previous prime is 81112363. The next prime is 81112379. The reversal of 81112368 is 86321118.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (81112363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537093 + ... + 537243.

Almost surely, 2^81112368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81112368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114897408).

81112368 is an abundant number, since it is smaller than the sum of its proper divisors (148682448).

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

81112368 is a wasteful number, since it uses less digits than its factorization.

81112368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 206 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 81112368 is about 9006.2405031178. The cubic root of 81112368 is about 432.8748560508.

The spelling of 81112368 in words is "eighty-one million, one hundred twelve thousand, three hundred sixty-eight".