204666240321 has 16 divisors (see below), whose sum is σ = 303872740800. Its totient is φ = 136145587104.

The previous prime is 204666240299. The next prime is 204666240343. The reversal of 204666240321 is 123042666402.

It is an interprime number because it is at equal distance from previous prime (204666240299) and next prime (204666240343).

It is not a de Polignac number, because 204666240321 - 2¹⁸ = 204665978177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204666240221) 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, 8281131 + ... + 8305808.

It is an arithmetic number, because the mean of its divisors is an integer number (18992046300).

Almost surely, 2^204666240321 is an apocalyptic number.

It is an amenable number.

204666240321 is a deficient number, since it is larger than the sum of its proper divisors (99206500479).

204666240321 is a wasteful number, since it uses less digits than its factorization.

204666240321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16587405 (or 16587399 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 204666240321 in words is "two hundred four billion, six hundred sixty-six million, two hundred forty thousand, three hundred twenty-one".