206302136205 has 32 divisors (see below), whose sum is σ = 360842895360. Its totient is φ = 99816418880.

The previous prime is 206302136197. The next prime is 206302136269. The reversal of 206302136205 is 502631203602.

It is not a de Polignac number, because 206302136205 - 2³ = 206302136197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1226097 + ... + 1384166.

It is an arithmetic number, because the mean of its divisors is an integer number (11276340480).

Almost surely, 2^206302136205 is an apocalyptic number.

It is an amenable number.

206302136205 is a deficient number, since it is larger than the sum of its proper divisors (154540759155).

206302136205 is a wasteful number, since it uses less digits than its factorization.

206302136205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610761.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 206302136205 its reverse (502631203602), we get a palindrome (708933339807).

The spelling of 206302136205 in words is "two hundred six billion, three hundred two million, one hundred thirty-six thousand, two hundred five".