206058887109 has 12 divisors (see below), whose sum is σ = 299361082956. Its totient is φ = 136578529152.

The previous prime is 206058886987. The next prime is 206058887147. The reversal of 206058887109 is 901788850602.

206058887109 is a `hidden beast` number, since 20 + 605 + 8 + 8 + 8 + 7 + 1 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 201082290084 + 4976597025 = 448422^2 + 70545^2 .

It is not a de Polignac number, because 206058887109 - 2⁹ = 206058886597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206058883109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66170212 + ... + 66173325.

It is an arithmetic number, because the mean of its divisors is an integer number (24946756913).

Almost surely, 2^206058887109 is an apocalyptic number.

It is an amenable number.

206058887109 is a deficient number, since it is larger than the sum of its proper divisors (93302195847).

206058887109 is a wasteful number, since it uses less digits than its factorization.

206058887109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132343716 (or 132343713 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 206058887109 in words is "two hundred six billion, fifty-eight million, eight hundred eighty-seven thousand, one hundred nine".