113521142320 has 80 divisors (see below), whose sum is σ = 276140540160. Its totient is φ = 43319308032.

The previous prime is 113521142249. The next prime is 113521142347. The reversal of 113521142320 is 23241125311.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 615967 + ... + 778753.

It is an arithmetic number, because the mean of its divisors is an integer number (3451756752).

Almost surely, 2^113521142320 is an apocalyptic number.

113521142320 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 113521142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138070270080).

113521142320 is an abundant number, since it is smaller than the sum of its proper divisors (162619397840).

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

113521142320 is a wasteful number, since it uses less digits than its factorization.

113521142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163202 (or 163196 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 113521142320 its reverse (23241125311), we get a palindrome (136762267631).

The spelling of 113521142320 in words is "one hundred thirteen billion, five hundred twenty-one million, one hundred forty-two thousand, three hundred twenty".