13836244985 has 4 divisors (see below), whose sum is σ = 16603493988. Its totient is φ = 11068995984.

The previous prime is 13836244969. The next prime is 13836245047. The reversal of 13836244985 is 58944263831.

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 9609684841 + 4226560144 = 98029^2 + 65012^2 .

It is a cyclic number.

It is not a de Polignac number, because 13836244985 - 2⁴ = 13836244969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383624494 + ... + 1383624503.

It is an arithmetic number, because the mean of its divisors is an integer number (4150873497).

Almost surely, 2^13836244985 is an apocalyptic number.

It is an amenable number.

13836244985 is a deficient number, since it is larger than the sum of its proper divisors (2767249003).

13836244985 is an equidigital number, since it uses as much as digits as its factorization.

13836244985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767249002.

The product of its digits is 4976640, while the sum is 53.

The spelling of 13836244985 in words is "thirteen billion, eight hundred thirty-six million, two hundred forty-four thousand, nine hundred eighty-five".