206809197336 has 576 divisors, whose sum is σ = 700353838080. Its totient is φ = 54840360960.

The previous prime is 206809197307. The next prime is 206809197337. The reversal of 206809197336 is 633791908602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206809197337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 804704920 + ... + 804705176.

It is an arithmetic number, because the mean of its divisors is an integer number (1215892080).

Almost surely, 2^206809197336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206809197336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350176919040).

206809197336 is an abundant number, since it is smaller than the sum of its proper divisors (493544640744).

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

206809197336 is a wasteful number, since it uses less digits than its factorization.

206809197336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 206809197336 in words is "two hundred six billion, eight hundred nine million, one hundred ninety-seven thousand, three hundred thirty-six".