206681186652 has 48 divisors (see below), whose sum is σ = 484020036864. Its totient is φ = 68641936000.

The previous prime is 206681186641. The next prime is 206681186669. The reversal of 206681186652 is 256681186602.

It is a super-2 number, since 2×206681186652² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206681186595 and 206681186604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9434752 + ... + 9456632.

It is an arithmetic number, because the mean of its divisors is an integer number (10083750768).

Almost surely, 2^206681186652 is an apocalyptic number.

It is an amenable number.

206681186652 is an abundant number, since it is smaller than the sum of its proper divisors (277338850212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206681186652 is a wasteful number, since it uses less digits than its factorization.

206681186652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24730 (or 24728 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 206681186652 in words is "two hundred six billion, six hundred eighty-one million, one hundred eighty-six thousand, six hundred fifty-two".