204660666641 has 8 divisors (see below), whose sum is σ = 209427044640. Its totient is φ = 199894599072.

The previous prime is 204660666611. The next prime is 204660666647. The reversal of 204660666641 is 146666066402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204660666641 - 2¹⁸ = 204660404497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204660666647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753286 + ... + 1866368.

It is an arithmetic number, because the mean of its divisors is an integer number (26178380580).

Almost surely, 2^204660666641 is an apocalyptic number.

It is an amenable number.

204660666641 is a deficient number, since it is larger than the sum of its proper divisors (4766377999).

204660666641 is a wasteful number, since it uses less digits than its factorization.

204660666641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155215.

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 204660666641 in words is "two hundred four billion, six hundred sixty million, six hundred sixty-six thousand, six hundred forty-one".