206286248861 has 16 divisors (see below), whose sum is σ = 257589341568. Its totient is φ = 160491724800.

The previous prime is 206286248827. The next prime is 206286248863. The reversal of 206286248861 is 168842682602.

It is a happy number.

It is not a de Polignac number, because 206286248861 - 2¹⁰ = 206286247837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206286248863) 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, 2040380 + ... + 2139093.

It is an arithmetic number, because the mean of its divisors is an integer number (16099333848).

Almost surely, 2^206286248861 is an apocalyptic number.

It is an amenable number.

206286248861 is a deficient number, since it is larger than the sum of its proper divisors (51303092707).

206286248861 is a wasteful number, since it uses less digits than its factorization.

206286248861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180132.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 206286248861 in words is "two hundred six billion, two hundred eighty-six million, two hundred forty-eight thousand, eight hundred sixty-one".