205220368833 has 4 divisors (see below), whose sum is σ = 273627158448. Its totient is φ = 136813579220.

The previous prime is 205220368823. The next prime is 205220368841. The reversal of 205220368833 is 338863022502.

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 205220368833 - 2⁹ = 205220368321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205220368823) 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, 34203394803 + ... + 34203394808.

It is an arithmetic number, because the mean of its divisors is an integer number (68406789612).

Almost surely, 2^205220368833 is an apocalyptic number.

It is an amenable number.

205220368833 is a deficient number, since it is larger than the sum of its proper divisors (68406789615).

205220368833 is an equidigital number, since it uses as much as digits as its factorization.

205220368833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68406789614.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 205220368833 in words is "two hundred five billion, two hundred twenty million, three hundred sixty-eight thousand, eight hundred thirty-three".