206864773461 has 12 divisors (see below), whose sum is σ = 298977115788. Its totient is φ = 137830259904.

The previous prime is 206864773457. The next prime is 206864773469. The reversal of 206864773461 is 164377468602.

206864773461 is a `hidden beast` number, since 2 + 0 + 6 + 86 + 477 + 34 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 164049300900 + 42815472561 = 405030^2 + 206919^2 .

It is not a de Polignac number, because 206864773461 - 2² = 206864773457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206864773398 and 206864773407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206864773469) 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 11 ways as a sum of consecutive naturals, for example, 6615960 + ... + 6647153.

It is an arithmetic number, because the mean of its divisors is an integer number (24914759649).

Almost surely, 2^206864773461 is an apocalyptic number.

It is an amenable number.

206864773461 is a deficient number, since it is larger than the sum of its proper divisors (92112342327).

206864773461 is a wasteful number, since it uses less digits than its factorization.

206864773461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13264852 (or 13264849 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 206864773461 in words is "two hundred six billion, eight hundred sixty-four million, seven hundred seventy-three thousand, four hundred sixty-one".