206089950065 has 8 divisors (see below), whose sum is σ = 247310421288. Its totient is φ = 164870305920.

The previous prime is 206089950049. The next prime is 206089950071. The reversal of 206089950065 is 560059980602.

It can be written as a sum of positive squares in 4 ways, for example, as 22000898929 + 184089051136 = 148327^2 + 429056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206089950065 - 2⁴ = 206089950049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206089949995 and 206089950022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714995 + ... + 960935.

It is an arithmetic number, because the mean of its divisors is an integer number (30913802661).

Almost surely, 2^206089950065 is an apocalyptic number.

It is an amenable number.

206089950065 is a deficient number, since it is larger than the sum of its proper divisors (41220471223).

206089950065 is a wasteful number, since it uses less digits than its factorization.

206089950065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413539.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 206089950065 in words is "two hundred six billion, eighty-nine million, nine hundred fifty thousand, sixty-five".