205134544315 has 16 divisors (see below), whose sum is σ = 254504964096. Its totient is φ = 158562079200.

The previous prime is 205134544309. The next prime is 205134544337. The reversal of 205134544315 is 513445431502.

It is not a de Polignac number, because 205134544315 - 2⁷ = 205134544187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950887 + ... + 1146496.

It is an arithmetic number, because the mean of its divisors is an integer number (15906560256).

Almost surely, 2^205134544315 is an apocalyptic number.

205134544315 is a deficient number, since it is larger than the sum of its proper divisors (49370419781).

205134544315 is a wasteful number, since it uses less digits than its factorization.

205134544315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098050.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 205134544315 its reverse (513445431502), we get a palindrome (718579975817).

The spelling of 205134544315 in words is "two hundred five billion, one hundred thirty-four million, five hundred forty-four thousand, three hundred fifteen".