266342066423 has 4 divisors (see below), whose sum is σ = 275526275640. Its totient is φ = 257157857208.

The previous prime is 266342066411. The next prime is 266342066491. The reversal of 266342066423 is 324660243662.

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 266342066423 - 2⁸ = 266342066167 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 (266342066923) 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, 4592104565 + ... + 4592104622.

It is an arithmetic number, because the mean of its divisors is an integer number (68881568910).

Almost surely, 2^266342066423 is an apocalyptic number.

266342066423 is a deficient number, since it is larger than the sum of its proper divisors (9184209217).

266342066423 is an equidigital number, since it uses as much as digits as its factorization.

266342066423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9184209216.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 266342066423 in words is "two hundred sixty-six billion, three hundred forty-two million, sixty-six thousand, four hundred twenty-three".