204595409089 has 16 divisors (see below), whose sum is σ = 211683217536. Its totient is φ = 197609948800.

The previous prime is 204595409077. The next prime is 204595409159. The reversal of 204595409089 is 980904595402.

It is a cyclic number.

It is not a de Polignac number, because 204595409089 - 2³⁵ = 170235670721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204595409789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7035399 + ... + 7064419.

It is an arithmetic number, because the mean of its divisors is an integer number (13230201096).

Almost surely, 2^204595409089 is an apocalyptic number.

It is an amenable number.

204595409089 is a deficient number, since it is larger than the sum of its proper divisors (7087808447).

204595409089 is a wasteful number, since it uses less digits than its factorization.

204595409089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30776.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 204595409089 in words is "two hundred four billion, five hundred ninety-five million, four hundred nine thousand, eighty-nine".