205474611343 has 4 divisors (see below), whose sum is σ = 205501801680. Its totient is φ = 205447421008.

The previous prime is 205474611337. The next prime is 205474611371. The reversal of 205474611343 is 343116474502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343116474502 = 2 ⋅171558237251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205474611343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205474611296 and 205474611305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205474611323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13583830 + ... + 13598947.

It is an arithmetic number, because the mean of its divisors is an integer number (51375450420).

Almost surely, 2^205474611343 is an apocalyptic number.

205474611343 is a deficient number, since it is larger than the sum of its proper divisors (27190337).

205474611343 is an equidigital number, since it uses as much as digits as its factorization.

205474611343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27190336.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 205474611343 in words is "two hundred five billion, four hundred seventy-four million, six hundred eleven thousand, three hundred forty-three".