206166632135 has 16 divisors (see below), whose sum is σ = 249326985600. Its totient is φ = 163649010720.

The previous prime is 206166632131. The next prime is 206166632197. The reversal of 206166632135 is 531236661602.

It is not a de Polignac number, because 206166632135 - 2² = 206166632131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206166632092 and 206166632101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206166632131) 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, 5022404 + ... + 5063286.

It is an arithmetic number, because the mean of its divisors is an integer number (15582936600).

Almost surely, 2^206166632135 is an apocalyptic number.

206166632135 is a deficient number, since it is larger than the sum of its proper divisors (43160353465).

206166632135 is a wasteful number, since it uses less digits than its factorization.

206166632135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48718.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 206166632135 in words is "two hundred six billion, one hundred sixty-six million, six hundred thirty-two thousand, one hundred thirty-five".