205352348821 has 8 divisors (see below), whose sum is σ = 216266943200. Its totient is φ = 194448412080.

The previous prime is 205352348777. The next prime is 205352348857. The reversal of 205352348821 is 128843253502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205352348821 - 2¹³ = 205352340629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205352348221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624835 + ... + 2701936.

It is an arithmetic number, because the mean of its divisors is an integer number (27033367900).

Almost surely, 2^205352348821 is an apocalyptic number.

It is an amenable number.

205352348821 is a deficient number, since it is larger than the sum of its proper divisors (10914594379).

205352348821 is a wasteful number, since it uses less digits than its factorization.

205352348821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328819.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 205352348821 in words is "two hundred five billion, three hundred fifty-two million, three hundred forty-eight thousand, eight hundred twenty-one".