21169371736163 has 8 divisors (see below), whose sum is σ = 24206526239232. Its totient is φ = 18135456868296.

The previous prime is 21169371736151. The next prime is 21169371736171. The reversal of 21169371736163 is 36163717396112.

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 21169371736163 - 2²⁰ = 21169370687587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21169371736099 and 21169371736108.

It is not an unprimeable number, because it can be changed into a prime (21169371735163) 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 7 ways as a sum of consecutive naturals, for example, 809894795 + ... + 809920932.

It is an arithmetic number, because the mean of its divisors is an integer number (3025815779904).

Almost surely, 2^{21169371736163} is an apocalyptic number.

21169371736163 is a deficient number, since it is larger than the sum of its proper divisors (3037154503069).

21169371736163 is a wasteful number, since it uses less digits than its factorization.

21169371736163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619817601.

The product of its digits is 5143824, while the sum is 56.

The spelling of 21169371736163 in words is "twenty-one trillion, one hundred sixty-nine billion, three hundred seventy-one million, seven hundred thirty-six thousand, one hundred sixty-three".