205234314355 has 24 divisors (see below), whose sum is σ = 287271102528. Its totient is φ = 140348573568.

The previous prime is 205234314353. The next prime is 205234314391. The reversal of 205234314355 is 553413432502.

It is not a de Polignac number, because 205234314355 - 2¹ = 205234314353 is a prime.

It is a super-2 number, since 2×205234314355² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205234314353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051354 + ... + 1231183.

It is an arithmetic number, because the mean of its divisors is an integer number (11969629272).

Almost surely, 2^205234314355 is an apocalyptic number.

205234314355 is a deficient number, since it is larger than the sum of its proper divisors (82036788173).

205234314355 is a wasteful number, since it uses less digits than its factorization.

205234314355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282923 (or 2282916 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 205234314355 its reverse (553413432502), we get a palindrome (758647746857).

The spelling of 205234314355 in words is "two hundred five billion, two hundred thirty-four million, three hundred fourteen thousand, three hundred fifty-five".