206157011 has 16 divisors (see below), whose sum is σ = 230348160. Its totient is φ = 183358080.

The previous prime is 206157001. The next prime is 206157013. The reversal of 206157011 is 110751602.

206157011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 206157011 - 2¹⁰ = 206155987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206157013) 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, 253796 + ... + 254606.

It is an arithmetic number, because the mean of its divisors is an integer number (14396760).

Almost surely, 2^206157011 is an apocalyptic number.

206157011 is a deficient number, since it is larger than the sum of its proper divisors (24191149).

206157011 is a wasteful number, since it uses less digits than its factorization.

206157011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 206157011 is about 14358.1687899258. The cubic root of 206157011 is about 590.7440684182.

The spelling of 206157011 in words is "two hundred six million, one hundred fifty-seven thousand, eleven".