206155424223 has 24 divisors (see below), whose sum is σ = 342287251488. Its totient is φ = 117122150592.

The previous prime is 206155424161. The next prime is 206155424231. The reversal of 206155424223 is 322424551602.

206155424223 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 5 + 5 + 424 + 223 = 666.

It is not a de Polignac number, because 206155424223 - 2¹² = 206155420127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206155424243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9446640 + ... + 9468437.

It is an arithmetic number, because the mean of its divisors is an integer number (14261968812).

Almost surely, 2^206155424223 is an apocalyptic number.

206155424223 is a deficient number, since it is larger than the sum of its proper divisors (136131827265).

206155424223 is a wasteful number, since it uses less digits than its factorization.

206155424223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18915263 (or 18915260 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 206155424223 its reverse (322424551602), we get a palindrome (528579975825).

The spelling of 206155424223 in words is "two hundred six billion, one hundred fifty-five million, four hundred twenty-four thousand, two hundred twenty-three".