8836289356221 has 24 divisors (see below), whose sum is σ = 12974465018840. Its totient is φ = 5793529795200.

The previous prime is 8836289356211. The next prime is 8836289356351. The reversal of 8836289356221 is 1226539826388.

8836289356221 is a `hidden beast` number, since 8 + 8 + 3 + 62 + 8 + 9 + 3 + 562 + 2 + 1 = 666.

8836289356221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1538803035225 + 7297486320996 = 1240485^2 + 2701386^2 .

It is not a de Polignac number, because 8836289356221 - 2¹¹ = 8836289354173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8836289356211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3160911 + ... + 5259651.

Almost surely, 2^{8836289356221} is an apocalyptic number.

It is an amenable number.

8836289356221 is a deficient number, since it is larger than the sum of its proper divisors (4138175662619).

8836289356221 is a wasteful number, since it uses less digits than its factorization.

8836289356221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106477 (or 2106474 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 8836289356221 in words is "eight trillion, eight hundred thirty-six billion, two hundred eighty-nine million, three hundred fifty-six thousand, two hundred twenty-one".