205728755745732 has 24 divisors (see below), whose sum is σ = 500904796598976. Its totient is φ = 65594675744928.

The previous prime is 205728755745607. The next prime is 205728755745767. The reversal of 205728755745732 is 237547557827502.

It is a happy number.

205728755745732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372697021003 + ... + 372697021554.

It is an arithmetic number, because the mean of its divisors is an integer number (20871033191624).

Almost surely, 2^{205728755745732} is an apocalyptic number.

It is an amenable number.

205728755745732 is an abundant number, since it is smaller than the sum of its proper divisors (295176040853244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205728755745732 is a wasteful number, since it uses less digits than its factorization.

205728755745732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745394042587 (or 745394042585 counting only the distinct ones).

The product of its (nonzero) digits is 1152480000, while the sum is 69.

The spelling of 205728755745732 in words is "two hundred five trillion, seven hundred twenty-eight billion, seven hundred fifty-five million, seven hundred forty-five thousand, seven hundred thirty-two".