206115170705 has 16 divisors (see below), whose sum is σ = 252321413904. Its totient is φ = 161577811200.

The previous prime is 206115170659. The next prime is 206115170707. The reversal of 206115170705 is 507071511602.

It can be written as a sum of positive squares in 8 ways, for example, as 13703980096 + 192411190609 = 117064^2 + 438647^2 .

It is not a de Polignac number, because 206115170705 - 2⁶ = 206115170641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206115170707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276746 + ... + 699155.

It is an arithmetic number, because the mean of its divisors is an integer number (15770088369).

Almost surely, 2^206115170705 is an apocalyptic number.

It is an amenable number.

206115170705 is a deficient number, since it is larger than the sum of its proper divisors (46206243199).

206115170705 is an equidigital number, since it uses as much as digits as its factorization.

206115170705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976756.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 206115170705 in words is "two hundred six billion, one hundred fifteen million, one hundred seventy thousand, seven hundred five".