204940426618 has 16 divisors (see below), whose sum is σ = 309937259520. Its totient is φ = 101631424176.

The previous prime is 204940426601. The next prime is 204940426667. The reversal of 204940426618 is 816624049402.

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, 734130 + ... + 974077.

It is an arithmetic number, because the mean of its divisors is an integer number (19371078720).

Almost surely, 2^204940426618 is an apocalyptic number.

204940426618 is a deficient number, since it is larger than the sum of its proper divisors (104996832902).

204940426618 is a wasteful number, since it uses less digits than its factorization.

204940426618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708701.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 204940426618 in words is "two hundred four billion, nine hundred forty million, four hundred twenty-six thousand, six hundred eighteen".