13863578689 has 4 divisors (see below), whose sum is σ = 13943715156. Its totient is φ = 13783442224.

The previous prime is 13863578669. The next prime is 13863578719. The reversal of 13863578689 is 98687536831.

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 9363852289 + 4499726400 = 96767^2 + 67080^2 .

It is a cyclic number.

It is not a de Polignac number, because 13863578689 - 2¹⁵ = 13863545921 is a prime.

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 13863578689.

It is not an unprimeable number, because it can be changed into a prime (13863578669) 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, 40067974 + ... + 40068319.

It is an arithmetic number, because the mean of its divisors is an integer number (3485928789).

Almost surely, 2^13863578689 is an apocalyptic number.

It is an amenable number.

13863578689 is a deficient number, since it is larger than the sum of its proper divisors (80136467).

13863578689 is an equidigital number, since it uses as much as digits as its factorization.

13863578689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80136466.

The product of its digits is 52254720, while the sum is 64.

The spelling of 13863578689 in words is "thirteen billion, eight hundred sixty-three million, five hundred seventy-eight thousand, six hundred eighty-nine".