13821513241 has 4 divisors (see below), whose sum is σ = 13833317584. Its totient is φ = 13809708900.

The previous prime is 13821513229. The next prime is 13821513289. The reversal of 13821513241 is 14231512831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13821513241 - 2¹⁵ = 13821480473 is a prime.

It is a super-2 number, since 2×13821513241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13821513341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5900415 + ... + 5902756.

It is an arithmetic number, because the mean of its divisors is an integer number (3458329396).

Almost surely, 2^13821513241 is an apocalyptic number.

It is an amenable number.

13821513241 is a deficient number, since it is larger than the sum of its proper divisors (11804343).

13821513241 is a wasteful number, since it uses less digits than its factorization.

13821513241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11804342.

The product of its digits is 5760, while the sum is 31.

The spelling of 13821513241 in words is "thirteen billion, eight hundred twenty-one million, five hundred thirteen thousand, two hundred forty-one".