204423440659 has 2 divisors, whose sum is σ = 204423440660. Its totient is φ = 204423440658.

The previous prime is 204423440593. The next prime is 204423440671. The reversal of 204423440659 is 956044324402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204423440659 - 2²⁷ = 204289222931 is a prime.

It is a super-3 number, since 3×204423440659³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (204423440699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102211720329 + 102211720330.

It is an arithmetic number, because the mean of its divisors is an integer number (102211720330).

Almost surely, 2^204423440659 is an apocalyptic number.

204423440659 is a deficient number, since it is larger than the sum of its proper divisors (1).

204423440659 is an equidigital number, since it uses as much as digits as its factorization.

204423440659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 204423440659 in words is "two hundred four billion, four hundred twenty-three million, four hundred forty thousand, six hundred fifty-nine".