111532520008 has 128 divisors (see below), whose sum is σ = 272432160000. Its totient is φ = 41568629760.

The previous prime is 111532519997. The next prime is 111532520009. The reversal of 111532520008 is 800025235111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (111532520009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2481318 + ... + 2525866.

It is an arithmetic number, because the mean of its divisors is an integer number (2128376250).

Almost surely, 2^111532520008 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 111532520008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136216080000).

111532520008 is an abundant number, since it is smaller than the sum of its proper divisors (160899639992).

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

111532520008 is a wasteful number, since it uses less digits than its factorization.

111532520008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44775 (or 44771 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 111532520008 its reverse (800025235111), we get a palindrome (911557755119).

The spelling of 111532520008 in words is "one hundred eleven billion, five hundred thirty-two million, five hundred twenty thousand, eight".