205342510655204 has 48 divisors (see below), whose sum is σ = 409757667580800. Its totient is φ = 89198165285376.

The previous prime is 205342510655201. The next prime is 205342510655213. The reversal of 205342510655204 is 402556015243502.

It is a happy number.

205342510655204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205342510655201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303792887 + ... + 304468065.

It is an arithmetic number, because the mean of its divisors is an integer number (8536618074600).

Almost surely, 2^{205342510655204} is an apocalyptic number.

It is an amenable number.

205342510655204 is a deficient number, since it is larger than the sum of its proper divisors (204415156925596).

205342510655204 is a wasteful number, since it uses less digits than its factorization.

205342510655204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019252 (or 1019250 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 44.

Adding to 205342510655204 its reverse (402556015243502), we get a palindrome (607898525898706).

The spelling of 205342510655204 in words is "two hundred five trillion, three hundred forty-two billion, five hundred ten million, six hundred fifty-five thousand, two hundred four".