5636327747891 has 4 divisors (see below), whose sum is σ = 5636362999800. Its totient is φ = 5636292495984.

The previous prime is 5636327747863. The next prime is 5636327747893. The reversal of 5636327747891 is 1987477236365.

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

It is a cyclic number.

It is not a de Polignac number, because 5636327747891 - 2¹⁰ = 5636327746867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5636327747893) 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 3 ways as a sum of consecutive naturals, for example, 17385026 + ... + 17706263.

It is an arithmetic number, because the mean of its divisors is an integer number (1409090749950).

Almost surely, 2^{5636327747891} is an apocalyptic number.

5636327747891 is a deficient number, since it is larger than the sum of its proper divisors (35251909).

5636327747891 is a wasteful number, since it uses less digits than its factorization.

5636327747891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35251908.

The product of its digits is 320060160, while the sum is 68.

The spelling of 5636327747891 in words is "five trillion, six hundred thirty-six billion, three hundred twenty-seven million, seven hundred forty-seven thousand, eight hundred ninety-one".