13823812687 has 4 divisors (see below), whose sum is σ = 13851295920. Its totient is φ = 13796329456.

The previous prime is 13823812679. The next prime is 13823812693. The reversal of 13823812687 is 78621832831.

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 13823812687 - 2³ = 13823812679 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13823812687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13823812637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13740862 + ... + 13741867.

It is an arithmetic number, because the mean of its divisors is an integer number (3462823980).

Almost surely, 2^13823812687 is an apocalyptic number.

13823812687 is a deficient number, since it is larger than the sum of its proper divisors (27483233).

13823812687 is an equidigital number, since it uses as much as digits as its factorization.

13823812687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27483232.

The product of its digits is 774144, while the sum is 49.

The spelling of 13823812687 in words is "thirteen billion, eight hundred twenty-three million, eight hundred twelve thousand, six hundred eighty-seven".