205144523206 has 16 divisors (see below), whose sum is σ = 351687306240. Its totient is φ = 87916336200.

The previous prime is 205144523197. The next prime is 205144523347. The reversal of 205144523206 is 602325441502.

It is a congruent number.

It is an unprimeable number.

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, 273675 + ... + 696553.

It is an arithmetic number, because the mean of its divisors is an integer number (21980456640).

Almost surely, 2^205144523206 is an apocalyptic number.

205144523206 is a deficient number, since it is larger than the sum of its proper divisors (146542783034).

205144523206 is a wasteful number, since it uses less digits than its factorization.

205144523206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457539.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 205144523206 its reverse (602325441502), we get a palindrome (807469964708).

The spelling of 205144523206 in words is "two hundred five billion, one hundred forty-four million, five hundred twenty-three thousand, two hundred six".