204332455161 has 24 divisors (see below), whose sum is σ = 297020840064. Its totient is φ = 135359419680.

The previous prime is 204332455139. The next prime is 204332455169. The reversal of 204332455161 is 161554233402.

204332455161 is a `hidden beast` number, since 2 + 0 + 43 + 3 + 2 + 4 + 551 + 61 = 666.

It is not a de Polignac number, because 204332455161 - 2¹¹ = 204332453113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204332455169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 803266 + ... + 1026596.

It is an arithmetic number, because the mean of its divisors is an integer number (12375868336).

Almost surely, 2^204332455161 is an apocalyptic number.

It is an amenable number.

204332455161 is a deficient number, since it is larger than the sum of its proper divisors (92688384903).

204332455161 is a wasteful number, since it uses less digits than its factorization.

204332455161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223981 (or 223978 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 204332455161 its reverse (161554233402), we get a palindrome (365886688563).

The spelling of 204332455161 in words is "two hundred four billion, three hundred thirty-two million, four hundred fifty-five thousand, one hundred sixty-one".