204522021610849 has 2 divisors, whose sum is σ = 204522021610850. Its totient is φ = 204522021610848.

The previous prime is 204522021610847. The next prime is 204522021610913. The reversal of 204522021610849 is 948016120225402.

204522021610849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204465404739600 + 56616871249 = 14299140^2 + 237943^2 .

It is a cyclic number.

It is not a de Polignac number, because 204522021610849 - 2¹ = 204522021610847 is a prime.

Together with 204522021610847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 204522021610799 and 204522021610808.

It is not a weakly prime, because it can be changed into another prime (204522021610847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102261010805424 + 102261010805425.

It is an arithmetic number, because the mean of its divisors is an integer number (102261010805425).

Almost surely, 2^{204522021610849} is an apocalyptic number.

It is an amenable number.

204522021610849 is a deficient number, since it is larger than the sum of its proper divisors (1).

204522021610849 is an equidigital number, since it uses as much as digits as its factorization.

204522021610849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 204522021610849 in words is "two hundred four trillion, five hundred twenty-two billion, twenty-one million, six hundred ten thousand, eight hundred forty-nine".