113440132520 has 128 divisors (see below), whose sum is σ = 300216430080. Its totient is φ = 38032896000.

The previous prime is 113440132517. The next prime is 113440132537. The reversal of 113440132520 is 25231044311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 113440132520.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5028065 + ... + 5050575.

It is an arithmetic number, because the mean of its divisors is an integer number (2345440860).

Almost surely, 2^113440132520 is an apocalyptic number.

113440132520 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 113440132520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150108215040).

113440132520 is an abundant number, since it is smaller than the sum of its proper divisors (186776297560).

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

113440132520 is a wasteful number, since it uses less digits than its factorization.

113440132520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23427 (or 23423 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 113440132520 its reverse (25231044311), we get a palindrome (138671176831).

The spelling of 113440132520 in words is "one hundred thirteen billion, four hundred forty million, one hundred thirty-two thousand, five hundred twenty".