5535617670221 has 2 divisors, whose sum is σ = 5535617670222. Its totient is φ = 5535617670220.

The previous prime is 5535617670211. The next prime is 5535617670223. The reversal of 5535617670221 is 1220767165355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3999540013225 + 1536077656996 = 1999885^2 + 1239386^2 .

It is a cyclic number.

It is not a de Polignac number, because 5535617670221 - 2¹⁸ = 5535617408077 is a prime.

Together with 5535617670223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5535617670221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5535617670223) 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 as a sum of consecutive naturals, namely, 2767808835110 + 2767808835111.

It is an arithmetic number, because the mean of its divisors is an integer number (2767808835111).

Almost surely, 2^{5535617670221} is an apocalyptic number.

It is an amenable number.

5535617670221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5535617670221 is an equidigital number, since it uses as much as digits as its factorization.

5535617670221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 5535617670221 in words is "five trillion, five hundred thirty-five billion, six hundred seventeen million, six hundred seventy thousand, two hundred twenty-one".