205534311355 has 8 divisors (see below), whose sum is σ = 246653966592. Its totient is φ = 164418920448.

The previous prime is 205534311347. The next prime is 205534311377. The reversal of 205534311355 is 553113435502.

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

It is a cyclic number.

It is not a de Polignac number, because 205534311355 - 2³ = 205534311347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959067 + ... + 1153636.

It is an arithmetic number, because the mean of its divisors is an integer number (30831745824).

Almost surely, 2^205534311355 is an apocalyptic number.

205534311355 is a deficient number, since it is larger than the sum of its proper divisors (41119655237).

205534311355 is a wasteful number, since it uses less digits than its factorization.

205534311355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132165.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 205534311355 its reverse (553113435502), we get a palindrome (758647746857).

The spelling of 205534311355 in words is "two hundred five billion, five hundred thirty-four million, three hundred eleven thousand, three hundred fifty-five".