204021062045 has 4 divisors (see below), whose sum is σ = 244825274460. Its totient is φ = 163216849632.

The previous prime is 204021062041. The next prime is 204021062071. The reversal of 204021062045 is 540260120402.

204021062045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75196059961 + 128825002084 = 274219^2 + 358922^2 .

It is a cyclic number.

It is not a de Polignac number, because 204021062045 - 2² = 204021062041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204021062041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20402106200 + ... + 20402106209.

It is an arithmetic number, because the mean of its divisors is an integer number (61206318615).

Almost surely, 2^204021062045 is an apocalyptic number.

It is an amenable number.

204021062045 is a deficient number, since it is larger than the sum of its proper divisors (40804212415).

204021062045 is an equidigital number, since it uses as much as digits as its factorization.

204021062045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40804212414.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 204021062045 its reverse (540260120402), we get a palindrome (744281182447).

The spelling of 204021062045 in words is "two hundred four billion, twenty-one million, sixty-two thousand, forty-five".