260563666543 has 4 divisors (see below), whose sum is σ = 260572223680. Its totient is φ = 260555109408.

The previous prime is 260563666511. The next prime is 260563666547. The reversal of 260563666543 is 345666365062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260563666543 - 2⁵ = 260563666511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260563666547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4232730 + ... + 4293847.

It is an arithmetic number, because the mean of its divisors is an integer number (65143055920).

Almost surely, 2^260563666543 is an apocalyptic number.

260563666543 is a deficient number, since it is larger than the sum of its proper divisors (8557137).

260563666543 is an equidigital number, since it uses as much as digits as its factorization.

260563666543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557136.

The product of its (nonzero) digits is 13996800, while the sum is 52.

The spelling of 260563666543 in words is "two hundred sixty billion, five hundred sixty-three million, six hundred sixty-six thousand, five hundred forty-three".