204004500514609 has 2 divisors, whose sum is σ = 204004500514610. Its totient is φ = 204004500514608.

The previous prime is 204004500514603. The next prime is 204004500514631. The reversal of 204004500514609 is 906415005400402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143536333842225 + 60468166672384 = 11980665^2 + 7776128^2 .

It is a cyclic number.

It is not a de Polignac number, because 204004500514609 - 2⁷ = 204004500514481 is a prime.

It is not a weakly prime, because it can be changed into another prime (204004500514603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102002250257304 + 102002250257305.

It is an arithmetic number, because the mean of its divisors is an integer number (102002250257305).

Almost surely, 2^{204004500514609} is an apocalyptic number.

It is an amenable number.

204004500514609 is a deficient number, since it is larger than the sum of its proper divisors (1).

204004500514609 is an equidigital number, since it uses as much as digits as its factorization.

204004500514609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 204004500514609 in words is "two hundred four trillion, four billion, five hundred million, five hundred fourteen thousand, six hundred nine".