204054404093 has 2 divisors, whose sum is σ = 204054404094. Its totient is φ = 204054404092.

The previous prime is 204054403997. The next prime is 204054404111. The reversal of 204054404093 is 390404450402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136842286084 + 67212118009 = 369922^2 + 259253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204054404093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204054404993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102027202046 + 102027202047.

It is an arithmetic number, because the mean of its divisors is an integer number (102027202047).

Almost surely, 2^204054404093 is an apocalyptic number.

It is an amenable number.

204054404093 is a deficient number, since it is larger than the sum of its proper divisors (1).

204054404093 is an equidigital number, since it uses as much as digits as its factorization.

204054404093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 204054404093 its reverse (390404450402), we get a palindrome (594458854495).

The spelling of 204054404093 in words is "two hundred four billion, fifty-four million, four hundred four thousand, ninety-three".