204459559229 has 4 divisors (see below), whose sum is σ = 205486994400. Its totient is φ = 203432124060.

The previous prime is 204459559223. The next prime is 204459559231. The reversal of 204459559229 is 922955954402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204459559229 - 2⁸ = 204459558973 is a prime.

It is a super-2 number, since 2×204459559229² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204459559223) 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 in 3 ways as a sum of consecutive naturals, for example, 513717287 + ... + 513717684.

It is an arithmetic number, because the mean of its divisors is an integer number (51371748600).

Almost surely, 2^204459559229 is an apocalyptic number.

It is an amenable number.

204459559229 is a deficient number, since it is larger than the sum of its proper divisors (1027435171).

204459559229 is a wasteful number, since it uses less digits than its factorization.

204459559229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027435170.

The product of its (nonzero) digits is 11664000, while the sum is 56.

The spelling of 204459559229 in words is "two hundred four billion, four hundred fifty-nine million, five hundred fifty-nine thousand, two hundred twenty-nine".