204903693122 has 6 divisors (see below), whose sum is σ = 307356499929. Its totient is φ = 102451526480.

The previous prime is 204903693097. The next prime is 204903693167. The reversal of 204903693122 is 221396309402.

It can be written as a sum of positive squares in 2 ways, for example, as 201824664001 + 3079029121 = 449249^2 + 55489^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=320081.

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 204903693122.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 480122 + ... + 800202.

Almost surely, 2^204903693122 is an apocalyptic number.

204903693122 is a deficient number, since it is larger than the sum of its proper divisors (102452806807).

204903693122 is an frugal number, since it uses more digits than its factorization.

204903693122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640164 (or 320083 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 204903693122 in words is "two hundred four billion, nine hundred three million, six hundred ninety-three thousand, one hundred twenty-two".