206250112161 has 40 divisors (see below), whose sum is σ = 312813815424. Its totient is φ = 135398783520.

The previous prime is 206250112153. The next prime is 206250112171. The reversal of 206250112161 is 161211052602.

206250112161 is a `hidden beast` number, since 2 + 0 + 625 + 0 + 11 + 21 + 6 + 1 = 666.

It is not a de Polignac number, because 206250112161 - 2³ = 206250112153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (206250112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20742451 + ... + 20752391.

Almost surely, 2^206250112161 is an apocalyptic number.

It is an amenable number.

206250112161 is a deficient number, since it is larger than the sum of its proper divisors (106563703263).

206250112161 is an equidigital number, since it uses as much as digits as its factorization.

206250112161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13843 (or 13834 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 206250112161 its reverse (161211052602), we get a palindrome (367461164763).

The spelling of 206250112161 in words is "two hundred six billion, two hundred fifty million, one hundred twelve thousand, one hundred sixty-one".