206530356334042 has 16 divisors (see below), whose sum is σ = 339920789672520. Its totient is φ = 93523180226112.

The previous prime is 206530356333953. The next prime is 206530356334157. The reversal of 206530356334042 is 240433653035602.

It can be written as a sum of positive squares in 4 ways, for example, as 179483065442641 + 27047290891401 = 13397129^2 + 5200701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 206530356333983 and 206530356334001.

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, 74938444317 + ... + 74938447072.

Almost surely, 2^{206530356334042} is an apocalyptic number.

206530356334042 is a deficient number, since it is larger than the sum of its proper divisors (133390433338478).

206530356334042 is a wasteful number, since it uses less digits than its factorization.

206530356334042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149876891457.

The product of its (nonzero) digits is 4665600, while the sum is 46.

The spelling of 206530356334042 in words is "two hundred six trillion, five hundred thirty billion, three hundred fifty-six million, three hundred thirty-four thousand, forty-two".