206833034521 has 9 divisors (see below), whose sum is σ = 207638857629. Its totient is φ = 206030331936.

The previous prime is 206833034461. The next prime is 206833034537. The reversal of 206833034521 is 125430338602.

The square root of 206833034521 is 454789.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1243338121 + 205589696400 = 35261^2 + 453420^2 .

It is not a de Polignac number, because 206833034521 - 2¹⁷ = 206832903449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206833034621) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 142348231 + ... + 142349683.

It is an arithmetic number, because the mean of its divisors is an integer number (23070984181).

Almost surely, 2^206833034521 is an apocalyptic number.

206833034521 is the 454789-th square number.

206833034521 is the 227395-th centered octagonal number.

It is an amenable number.

206833034521 is a deficient number, since it is larger than the sum of its proper divisors (805823108).

206833034521 is an frugal number, since it uses more digits than its factorization.

206833034521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 206833034521 in words is "two hundred six billion, eight hundred thirty-three million, thirty-four thousand, five hundred twenty-one".