206133390765 has 12 divisors (see below), whose sum is σ = 357297877404. Its totient is φ = 109937808384.

The previous prime is 206133390739. The next prime is 206133390817. The reversal of 206133390765 is 567093331602.

206133390765 is a `hidden beast` number, since 20 + 613 + 3 + 3 + 9 + 0 + 7 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73266579684 + 132866811081 = 270678^2 + 364509^2 .

It is not a de Polignac number, because 206133390765 - 2⁸ = 206133390509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4580742017 = 206133390765 / (2 + 0 + 6 + 1 + 3 + 3 + 3 + 9 + 0 + 7 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 206133390765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2290370964 + ... + 2290371053.

It is an arithmetic number, because the mean of its divisors is an integer number (29774823117).

Almost surely, 2^206133390765 is an apocalyptic number.

It is an amenable number.

206133390765 is a deficient number, since it is larger than the sum of its proper divisors (151164486639).

206133390765 is a wasteful number, since it uses less digits than its factorization.

206133390765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580742028 (or 4580742025 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 206133390765 in words is "two hundred six billion, one hundred thirty-three million, three hundred ninety thousand, seven hundred sixty-five".