206159560061 has 16 divisors (see below), whose sum is σ = 253752651264. Its totient is φ = 163103808384.

The previous prime is 206159559971. The next prime is 206159560109. The reversal of 206159560061 is 160065951602.

It is a cyclic number.

It is not a de Polignac number, because 206159560061 - 2¹⁸ = 206159297917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206159560561) 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, 1368305 + ... + 1511481.

It is an arithmetic number, because the mean of its divisors is an integer number (15859540704).

Almost surely, 2^206159560061 is an apocalyptic number.

It is an amenable number.

206159560061 is a deficient number, since it is larger than the sum of its proper divisors (47593091203).

206159560061 is a wasteful number, since it uses less digits than its factorization.

206159560061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159020.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 206159560061 in words is "two hundred six billion, one hundred fifty-nine million, five hundred sixty thousand, sixty-one".