5636521433 has 4 divisors (see below), whose sum is σ = 5742870948. Its totient is φ = 5530171920.

The previous prime is 5636521421. The next prime is 5636521459. The reversal of 5636521433 is 3341256365.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5142037264 + 494484169 = 71708^2 + 22237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5636521433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5636521733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53174678 + ... + 53174783.

It is an arithmetic number, because the mean of its divisors is an integer number (1435717737).

Almost surely, 2^5636521433 is an apocalyptic number.

5636521433 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

5636521433 is a deficient number, since it is larger than the sum of its proper divisors (106349515).

5636521433 is a wasteful number, since it uses less digits than its factorization.

5636521433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106349514.

The product of its digits is 194400, while the sum is 38.

The square root of 5636521433 is about 75076.7702621790. The cubic root of 5636521433 is about 1779.6600614357.

Adding to 5636521433 its reverse (3341256365), we get a palindrome (8977777798).

The spelling of 5636521433 in words is "five billion, six hundred thirty-six million, five hundred twenty-one thousand, four hundred thirty-three".