5263569537221 has 2 divisors, whose sum is σ = 5263569537222. Its totient is φ = 5263569537220.

The previous prime is 5263569537197. The next prime is 5263569537283. The reversal of 5263569537221 is 1227359653625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5219004216196 + 44565321025 = 2284514^2 + 211105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5263569537221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5263569137221) 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 as a sum of consecutive naturals, namely, 2631784768610 + 2631784768611.

It is an arithmetic number, because the mean of its divisors is an integer number (2631784768611).

Almost surely, 2^{5263569537221} is an apocalyptic number.

It is an amenable number.

5263569537221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5263569537221 is an equidigital number, since it uses as much as digits as its factorization.

5263569537221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 56.

The spelling of 5263569537221 in words is "five trillion, two hundred sixty-three billion, five hundred sixty-nine million, five hundred thirty-seven thousand, two hundred twenty-one".