204934195668659 has 2 divisors, whose sum is σ = 204934195668660. Its totient is φ = 204934195668658.

The previous prime is 204934195668637. The next prime is 204934195668677. The reversal of 204934195668659 is 956866591439402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204934195668659 - 2¹² = 204934195664563 is a prime.

It is a super-2 number, since 2×204934195668659² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204934195668659.

It is not a weakly prime, because it can be changed into another prime (204934195668679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102467097834329 + 102467097834330.

It is an arithmetic number, because the mean of its divisors is an integer number (102467097834330).

Almost surely, 2^{204934195668659} is an apocalyptic number.

204934195668659 is a deficient number, since it is larger than the sum of its proper divisors (1).

204934195668659 is an equidigital number, since it uses as much as digits as its factorization.

204934195668659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3023308800, while the sum is 77.

The spelling of 204934195668659 in words is "two hundred four trillion, nine hundred thirty-four billion, one hundred ninety-five million, six hundred sixty-eight thousand, six hundred fifty-nine".