13668729163 has 4 divisors (see below), whose sum is σ = 13668975088. Its totient is φ = 13668483240.

The previous prime is 13668729127. The next prime is 13668729167. The reversal of 13668729163 is 36192786631.

It is a happy number.

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 13668729163 - 2²⁹ = 13131858251 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 13668729163.

It is not an unprimeable number, because it can be changed into a prime (13668729167) 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, 4345 + ... + 165397.

It is an arithmetic number, because the mean of its divisors is an integer number (3417243772).

Almost surely, 2^13668729163 is an apocalyptic number.

13668729163 is a deficient number, since it is larger than the sum of its proper divisors (245925).

13668729163 is an equidigital number, since it uses as much as digits as its factorization.

13668729163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245924.

The product of its digits is 1959552, while the sum is 52.

The spelling of 13668729163 in words is "thirteen billion, six hundred sixty-eight million, seven hundred twenty-nine thousand, one hundred sixty-three".