206565650023 has 8 divisors (see below), whose sum is σ = 217921806000. Its totient is φ = 195257922048.

The previous prime is 206565649981. The next prime is 206565650069. The reversal of 206565650023 is 320056565602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206565650023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206565650323) 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 7 ways as a sum of consecutive naturals, for example, 12098236 + ... + 12115297.

It is an arithmetic number, because the mean of its divisors is an integer number (27240225750).

Almost surely, 2^206565650023 is an apocalyptic number.

206565650023 is a deficient number, since it is larger than the sum of its proper divisors (11356155977).

206565650023 is a wasteful number, since it uses less digits than its factorization.

206565650023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24214001.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 206565650023 in words is "two hundred six billion, five hundred sixty-five million, six hundred fifty thousand, twenty-three".