204644084929 has 2 divisors, whose sum is σ = 204644084930. Its totient is φ = 204644084928.

The previous prime is 204644084783. The next prime is 204644084963. The reversal of 204644084929 is 929480446402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149806154304 + 54837930625 = 387048^2 + 234175^2 .

It is a cyclic number.

It is not a de Polignac number, because 204644084929 - 2¹⁵ = 204644052161 is a prime.

It is not a weakly prime, because it can be changed into another prime (204644084969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102322042464 + 102322042465.

It is an arithmetic number, because the mean of its divisors is an integer number (102322042465).

Almost surely, 2^204644084929 is an apocalyptic number.

It is an amenable number.

204644084929 is a deficient number, since it is larger than the sum of its proper divisors (1).

204644084929 is an equidigital number, since it uses as much as digits as its factorization.

204644084929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 204644084929 in words is "two hundred four billion, six hundred forty-four million, eighty-four thousand, nine hundred twenty-nine".