204960718993 has 2 divisors, whose sum is σ = 204960718994. Its totient is φ = 204960718992.

The previous prime is 204960718939. The next prime is 204960719017. The reversal of 204960718993 is 399817069402.

Together with previous prime (204960718939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145936988289 + 59023730704 = 382017^2 + 242948^2 .

It is a cyclic number.

It is not a de Polignac number, because 204960718993 - 2¹⁷ = 204960587921 is a prime.

It is not a weakly prime, because it can be changed into another prime (204960718903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102480359496 + 102480359497.

It is an arithmetic number, because the mean of its divisors is an integer number (102480359497).

Almost surely, 2^204960718993 is an apocalyptic number.

It is an amenable number.

204960718993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204960718993 is an equidigital number, since it uses as much as digits as its factorization.

204960718993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 204960718993 in words is "two hundred four billion, nine hundred sixty million, seven hundred eighteen thousand, nine hundred ninety-three".