204706255641 has 4 divisors (see below), whose sum is σ = 272941674192. Its totient is φ = 136470837092.

The previous prime is 204706255639. The next prime is 204706255643. The reversal of 204706255641 is 146552607402.

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 an interprime number because it is at equal distance from previous prime (204706255639) and next prime (204706255643).

It is a cyclic number.

It is not a de Polignac number, because 204706255641 - 2¹ = 204706255639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204706255593 and 204706255602.

It is not an unprimeable number, because it can be changed into a prime (204706255643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34117709271 + ... + 34117709276.

It is an arithmetic number, because the mean of its divisors is an integer number (68235418548).

Almost surely, 2^204706255641 is an apocalyptic number.

It is an amenable number.

204706255641 is a deficient number, since it is larger than the sum of its proper divisors (68235418551).

204706255641 is an equidigital number, since it uses as much as digits as its factorization.

204706255641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68235418550.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 204706255641 in words is "two hundred four billion, seven hundred six million, two hundred fifty-five thousand, six hundred forty-one".