206175223147 has 4 divisors (see below), whose sum is σ = 206176798000. Its totient is φ = 206173648296.

The previous prime is 206175223141. The next prime is 206175223157. The reversal of 206175223147 is 741322571602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206175223147 - 2⁷ = 206175223019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206175223141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571272 + ... + 859477.

It is an arithmetic number, because the mean of its divisors is an integer number (51544199500).

Almost surely, 2^206175223147 is an apocalyptic number.

206175223147 is a deficient number, since it is larger than the sum of its proper divisors (1574853).

206175223147 is a wasteful number, since it uses less digits than its factorization.

206175223147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574852.

The product of its (nonzero) digits is 141120, while the sum is 40.

Adding to 206175223147 its reverse (741322571602), we get a palindrome (947497794749).

The spelling of 206175223147 in words is "two hundred six billion, one hundred seventy-five million, two hundred twenty-three thousand, one hundred forty-seven".