206505060003 has 12 divisors (see below), whose sum is σ = 325401912888. Its totient is φ = 125154581760.

The previous prime is 206505060001. The next prime is 206505060023. The reversal of 206505060003 is 300060505602.

206505060003 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 0 + 50 + 600 + 0 + 3 = 666.

It is not a de Polignac number, because 206505060003 - 2¹ = 206505060001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206505060001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1042954750 + ... + 1042954947.

It is an arithmetic number, because the mean of its divisors is an integer number (27116826074).

Almost surely, 2^206505060003 is an apocalyptic number.

206505060003 is a deficient number, since it is larger than the sum of its proper divisors (118896852885).

206505060003 is a wasteful number, since it uses less digits than its factorization.

206505060003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085909714 (or 2085909711 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 206505060003 its reverse (300060505602), we get a palindrome (506565565605).

The spelling of 206505060003 in words is "two hundred six billion, five hundred five million, sixty thousand, three".