11513243250 has 96 divisors (see below), whose sum is σ = 31187922480. Its totient is φ = 3064665600.

The previous prime is 11513243237. The next prime is 11513243257. The reversal of 11513243250 is 5234231511.

11513243250 is a `hidden beast` number, since 1 + 15 + 1 + 324 + 325 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1586508561 + 9926734689 = 39831^2 + 99633^2 .

It is not an unprimeable number, because it can be changed into a prime (11513243257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1329936 + ... + 1338564.

Almost surely, 2^11513243250 is an apocalyptic number.

11513243250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11513243250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15593961240).

11513243250 is an abundant number, since it is smaller than the sum of its proper divisors (19674679230).

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

11513243250 is a wasteful number, since it uses less digits than its factorization.

11513243250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9245 (or 9232 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 11513243250 its reverse (5234231511), we get a palindrome (16747474761).

The spelling of 11513243250 in words is "eleven billion, five hundred thirteen million, two hundred forty-three thousand, two hundred fifty".