206621896089 has 8 divisors (see below), whose sum is σ = 314852413120. Its totient is φ = 118069654896.

The previous prime is 206621896051. The next prime is 206621896157. The reversal of 206621896089 is 980698126602.

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

It is not a de Polignac number, because 206621896089 - 2⁸ = 206621895833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206621896589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4919568934 + ... + 4919568975.

It is an arithmetic number, because the mean of its divisors is an integer number (39356551640).

Almost surely, 2^206621896089 is an apocalyptic number.

It is an amenable number.

206621896089 is a deficient number, since it is larger than the sum of its proper divisors (108230517031).

206621896089 is an equidigital number, since it uses as much as digits as its factorization.

206621896089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839137919.

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 206621896089 in words is "two hundred six billion, six hundred twenty-one million, eight hundred ninety-six thousand, eighty-nine".