205434641343 has 16 divisors (see below), whose sum is σ = 276595877376. Its totient is φ = 135615144480.

The previous prime is 205434641281. The next prime is 205434641371. The reversal of 205434641343 is 343146434502.

It is not a de Polignac number, because 205434641343 - 2¹⁷ = 205434510271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205434643343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5053846 + ... + 5094332.

It is an arithmetic number, because the mean of its divisors is an integer number (17287242336).

Almost surely, 2^205434641343 is an apocalyptic number.

205434641343 is a deficient number, since it is larger than the sum of its proper divisors (71161236033).

205434641343 is a wasteful number, since it uses less digits than its factorization.

205434641343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57014.

The product of its (nonzero) digits is 414720, while the sum is 39.

The spelling of 205434641343 in words is "two hundred five billion, four hundred thirty-four million, six hundred forty-one thousand, three hundred forty-three".