13021644163 has 8 divisors (see below), whose sum is σ = 14338192320. Its totient is φ = 11727223080.

The previous prime is 13021644149. The next prime is 13021644179. The reversal of 13021644163 is 36144612031.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13021644163 - 2²¹ = 13019547011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021644113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5530533 + ... + 5532886.

It is an arithmetic number, because the mean of its divisors is an integer number (1792274040).

Almost surely, 2^13021644163 is an apocalyptic number.

13021644163 is a deficient number, since it is larger than the sum of its proper divisors (1316548157).

13021644163 is a wasteful number, since it uses less digits than its factorization.

13021644163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063537.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 13021644163 in words is "thirteen billion, twenty-one million, six hundred forty-four thousand, one hundred sixty-three".