13821018745 has 8 divisors (see below), whose sum is σ = 16866328320. Its totient is φ = 10869411120.

The previous prime is 13821018721. The next prime is 13821018749. The reversal of 13821018745 is 54781012831.

13821018745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13821018745 - 2²¹ = 13818921593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13821018698 and 13821018707.

It is not an unprimeable number, because it can be changed into a prime (13821018749) 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 7 ways as a sum of consecutive naturals, for example, 23425161 + ... + 23425750.

It is an arithmetic number, because the mean of its divisors is an integer number (2108291040).

Almost surely, 2^13821018745 is an apocalyptic number.

It is an amenable number.

13821018745 is a deficient number, since it is larger than the sum of its proper divisors (3045309575).

13821018745 is an equidigital number, since it uses as much as digits as its factorization.

13821018745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46850975.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 13821018745 in words is "thirteen billion, eight hundred twenty-one million, eighteen thousand, seven hundred forty-five".