204660488069 has 4 divisors (see below), whose sum is σ = 204690289740. Its totient is φ = 204630686400.

The previous prime is 204660488051. The next prime is 204660488077. The reversal of 204660488069 is 960884066402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23918169025 + 180742319044 = 154655^2 + 425138^2 .

It is a cyclic number.

It is not a de Polignac number, because 204660488069 - 2²⁴ = 204643710853 is a prime.

It is a super-2 number, since 2×204660488069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204660488069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204660488009) 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, 14890532 + ... + 14904269.

It is an arithmetic number, because the mean of its divisors is an integer number (51172572435).

Almost surely, 2^204660488069 is an apocalyptic number.

It is an amenable number.

204660488069 is a deficient number, since it is larger than the sum of its proper divisors (29801671).

204660488069 is an equidigital number, since it uses as much as digits as its factorization.

204660488069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29801670.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 204660488069 in words is "two hundred four billion, six hundred sixty million, four hundred eighty-eight thousand, sixty-nine".