11533471236 has 81 divisors (see below), whose sum is σ = 33927165909. Its totient is φ = 3293988768.

The previous prime is 11533471231. The next prime is 11533471277. The reversal of 11533471236 is 63217433511.

The square root of 11533471236 is 107394.

It is a perfect power (a square), and thus also a powerful number.

11533471236 is a `hidden beast` number, since 1 + 153 + 3 + 471 + 2 + 36 = 666.

11533471236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4949122500 + 6584348736 = 70350^2 + 81144^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11533471236.

It is not an unprimeable number, because it can be changed into a prime (11533471231) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 4509270 + ... + 4511826.

Almost surely, 2^11533471236 is an apocalyptic number.

11533471236 is the 107394-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11533471236

11533471236 is an abundant number, since it is smaller than the sum of its proper divisors (22393694673).

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

11533471236 is an equidigital number, since it uses as much as digits as its factorization.

11533471236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138 (or 2569 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

Multiplying 11533471236 by its sum of digits (36), we get a square (415204964496 = 644364²).

11533471236 divided by its sum of digits (36) gives a square (320374201 = 17899²).

The spelling of 11533471236 in words is "eleven billion, five hundred thirty-three million, four hundred seventy-one thousand, two hundred thirty-six".