266004213263543 has 8 divisors (see below), whose sum is σ = 272549922332688. Its totient is φ = 259474848038784.

The previous prime is 266004213263489. The next prime is 266004213263573. The reversal of 266004213263543 is 345362312400662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266004213263543 - 2³² = 265999918296247 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 (266004213263573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4085928146 + ... + 4085993247.

It is an arithmetic number, because the mean of its divisors is an integer number (34068740291586).

Almost surely, 2^{266004213263543} is an apocalyptic number.

266004213263543 is a deficient number, since it is larger than the sum of its proper divisors (6545709069145).

266004213263543 is an equidigital number, since it uses as much as digits as its factorization.

266004213263543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171922193.

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 266004213263543 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, two hundred sixty-three thousand, five hundred forty-three".