205223420523 has 8 divisors (see below), whose sum is σ = 298506793536. Its totient is φ = 124377830600.

The previous prime is 205223420471. The next prime is 205223420527. The reversal of 205223420523 is 325024322502.

205223420523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205223420523 - 2²⁰ = 205222371947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205223420527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109445733 + ... + 3109445798.

It is an arithmetic number, because the mean of its divisors is an integer number (37313349192).

Almost surely, 2^205223420523 is an apocalyptic number.

205223420523 is a deficient number, since it is larger than the sum of its proper divisors (93283373013).

205223420523 is a wasteful number, since it uses less digits than its factorization.

205223420523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6218891545.

The product of its (nonzero) digits is 28800, while the sum is 30.

The spelling of 205223420523 in words is "two hundred five billion, two hundred twenty-three million, four hundred twenty thousand, five hundred twenty-three".