204735007261 has 4 divisors (see below), whose sum is σ = 204739726752. Its totient is φ = 204730287772.

The previous prime is 204735007249. The next prime is 204735007289. The reversal of 204735007261 is 162700537402.

It is a happy number.

204735007261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204735007261 - 2⁵ = 204735007229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204735007261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204735002261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294065 + ... + 2381638.

It is an arithmetic number, because the mean of its divisors is an integer number (51184931688).

Almost surely, 2^204735007261 is an apocalyptic number.

It is an amenable number.

204735007261 is a deficient number, since it is larger than the sum of its proper divisors (4719491).

204735007261 is an equidigital number, since it uses as much as digits as its factorization.

204735007261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719490.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 204735007261 in words is "two hundred four billion, seven hundred thirty-five million, seven thousand, two hundred sixty-one".