204242102618 has 16 divisors (see below), whose sum is σ = 315002134440. Its totient is φ = 99259910400.

The previous prime is 204242102573. The next prime is 204242102621. The reversal of 204242102618 is 816201242402.

It can be written as a sum of positive squares in 4 ways, for example, as 136742425369 + 67499677249 = 369787^2 + 259807^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4607603 + ... + 4651718.

Almost surely, 2^204242102618 is an apocalyptic number.

204242102618 is a deficient number, since it is larger than the sum of its proper divisors (110760031822).

204242102618 is a wasteful number, since it uses less digits than its factorization.

204242102618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259633.

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 204242102618 in words is "two hundred four billion, two hundred forty-two million, one hundred two thousand, six hundred eighteen".