204420304121045 has 16 divisors (see below), whose sum is σ = 245360199000000. Its totient is φ = 163499023283328.

The previous prime is 204420304121003. The next prime is 204420304121069. The reversal of 204420304121045 is 540121403024402.

It is a cyclic number.

It is not a de Polignac number, because 204420304121045 - 2¹⁶ = 204420304055509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667322126 + ... + 667628384.

It is an arithmetic number, because the mean of its divisors is an integer number (15335012437500).

Almost surely, 2^{204420304121045} is an apocalyptic number.

It is an amenable number.

204420304121045 is a deficient number, since it is larger than the sum of its proper divisors (40939894878955).

204420304121045 is a wasteful number, since it uses less digits than its factorization.

204420304121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336212.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 204420304121045 its reverse (540121403024402), we get a palindrome (744541707145447).

The spelling of 204420304121045 in words is "two hundred four trillion, four hundred twenty billion, three hundred four million, one hundred twenty-one thousand, forty-five".