204002321573 has 2 divisors, whose sum is σ = 204002321574. Its totient is φ = 204002321572.

The previous prime is 204002321543. The next prime is 204002321647. The reversal of 204002321573 is 375123200402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202444203844 + 1558117729 = 449938^2 + 39473^2 .

It is a cyclic number.

It is not a de Polignac number, because 204002321573 - 2¹⁰ = 204002320549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204002321543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102001160786 + 102001160787.

It is an arithmetic number, because the mean of its divisors is an integer number (102001160787).

Almost surely, 2^204002321573 is an apocalyptic number.

It is an amenable number.

204002321573 is a deficient number, since it is larger than the sum of its proper divisors (1).

204002321573 is an equidigital number, since it uses as much as digits as its factorization.

204002321573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 204002321573 its reverse (375123200402), we get a palindrome (579125521975).

The spelling of 204002321573 in words is "two hundred four billion, two million, three hundred twenty-one thousand, five hundred seventy-three".