204020566242037 has 16 divisors (see below), whose sum is σ = 209145926731392. Its totient is φ = 198902362855680.

The previous prime is 204020566241939. The next prime is 204020566242139. The reversal of 204020566242037 is 730242665020402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204020566242037 - 2³⁵ = 203986206503669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204020566241984 and 204020566242002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204020566242937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329126128 + ... + 329745430.

It is an arithmetic number, because the mean of its divisors is an integer number (13071620420712).

Almost surely, 2^{204020566242037} is an apocalyptic number.

It is an amenable number.

204020566242037 is a deficient number, since it is larger than the sum of its proper divisors (5125360489355).

204020566242037 is a wasteful number, since it uses less digits than its factorization.

204020566242037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625068.

The product of its (nonzero) digits is 967680, while the sum is 43.

The spelling of 204020566242037 in words is "two hundred four trillion, twenty billion, five hundred sixty-six million, two hundred forty-two thousand, thirty-seven".