205041566743 has 16 divisors (see below), whose sum is σ = 226222768800. Its totient is φ = 184633989120.

The previous prime is 205041566683. The next prime is 205041566773. The reversal of 205041566743 is 347665140502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205041566743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205041566743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205041566773) 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, 10377768 + ... + 10397506.

It is an arithmetic number, because the mean of its divisors is an integer number (14138923050).

Almost surely, 2^205041566743 is an apocalyptic number.

205041566743 is a deficient number, since it is larger than the sum of its proper divisors (21181202057).

205041566743 is a wasteful number, since it uses less digits than its factorization.

205041566743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39282.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 205041566743 in words is "two hundred five billion, forty-one million, five hundred sixty-six thousand, seven hundred forty-three".