205322203561643 has 8 divisors (see below), whose sum is σ = 234881545332480. Its totient is φ = 175819761392040.

The previous prime is 205322203561621. The next prime is 205322203561661. The reversal of 205322203561643 is 346165302223502.

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 205322203561643 - 2³² = 205317908594347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205322203561594 and 205322203561603.

It is not an unprimeable number, because it can be changed into a prime (205322203561613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14224892573 + ... + 14224907006.

It is an arithmetic number, because the mean of its divisors is an integer number (29360193166560).

Almost surely, 2^{205322203561643} is an apocalyptic number.

205322203561643 is a deficient number, since it is larger than the sum of its proper divisors (29559341770837).

205322203561643 is a wasteful number, since it uses less digits than its factorization.

205322203561643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28449800617.

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 205322203561643 in words is "two hundred five trillion, three hundred twenty-two billion, two hundred three million, five hundred sixty-one thousand, six hundred forty-three".