204101555233 has 4 divisors (see below), whose sum is σ = 209079641988. Its totient is φ = 199123468480.

The previous prime is 204101555197. The next prime is 204101555323. The reversal of 204101555233 is 332555101402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332555101402 = 2 ⋅166277550701.

It can be written as a sum of positive squares in 2 ways, for example, as 22806134289 + 181295420944 = 151017^2 + 425788^2 .

It is a cyclic number.

It is not a de Polignac number, because 204101555233 - 2²¹ = 204099458081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204101555195 and 204101555204.

It is not an unprimeable number, because it can be changed into a prime (204101552233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489043316 + ... + 2489043397.

It is an arithmetic number, because the mean of its divisors is an integer number (52269910497).

Almost surely, 2^204101555233 is an apocalyptic number.

It is an amenable number.

204101555233 is a deficient number, since it is larger than the sum of its proper divisors (4978086755).

204101555233 is an equidigital number, since it uses as much as digits as its factorization.

204101555233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978086754.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 204101555233 its reverse (332555101402), we get a palindrome (536656656635).

The spelling of 204101555233 in words is "two hundred four billion, one hundred one million, five hundred fifty-five thousand, two hundred thirty-three".