204812046289 has 2 divisors, whose sum is σ = 204812046290. Its totient is φ = 204812046288.

The previous prime is 204812046287. The next prime is 204812046331. The reversal of 204812046289 is 982640218402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154678597264 + 50133449025 = 393292^2 + 223905^2 .

It is a cyclic number.

It is not a de Polignac number, because 204812046289 - 2¹ = 204812046287 is a prime.

Together with 204812046287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204812046287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102406023144 + 102406023145.

It is an arithmetic number, because the mean of its divisors is an integer number (102406023145).

Almost surely, 2^204812046289 is an apocalyptic number.

It is an amenable number.

204812046289 is a deficient number, since it is larger than the sum of its proper divisors (1).

204812046289 is an equidigital number, since it uses as much as digits as its factorization.

204812046289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 204812046289 in words is "two hundred four billion, eight hundred twelve million, forty-six thousand, two hundred eighty-nine".