204022399993 has 2 divisors, whose sum is σ = 204022399994. Its totient is φ = 204022399992.

The previous prime is 204022399979. The next prime is 204022400051. The reversal of 204022399993 is 399993220402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154635338169 + 49387061824 = 393237^2 + 222232^2 .

It is a cyclic number.

It is not a de Polignac number, because 204022399993 - 2¹⁷ = 204022268921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204022399993.

It is not a weakly prime, because it can be changed into another prime (204022399393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102011199996 + 102011199997.

It is an arithmetic number, because the mean of its divisors is an integer number (102011199997).

Almost surely, 2^204022399993 is an apocalyptic number.

It is an amenable number.

204022399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204022399993 is an equidigital number, since it uses as much as digits as its factorization.

204022399993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The spelling of 204022399993 in words is "two hundred four billion, twenty-two million, three hundred ninety-nine thousand, nine hundred ninety-three".