205382163361 has 4 divisors (see below), whose sum is σ = 209751996672. Its totient is φ = 201012330052.

The previous prime is 205382163353. The next prime is 205382163367. The reversal of 205382163361 is 163361283502.

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 205382163361 - 2³ = 205382163353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205382163367) 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, 2184916585 + ... + 2184916678.

It is an arithmetic number, because the mean of its divisors is an integer number (52437999168).

Almost surely, 2^205382163361 is an apocalyptic number.

It is an amenable number.

205382163361 is a deficient number, since it is larger than the sum of its proper divisors (4369833311).

205382163361 is an equidigital number, since it uses as much as digits as its factorization.

205382163361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369833310.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 205382163361 in words is "two hundred five billion, three hundred eighty-two million, one hundred sixty-three thousand, three hundred sixty-one".