266641144036243 has 8 divisors (see below), whose sum is σ = 270398272039776. Its totient is φ = 262884061003200.

The previous prime is 266641144036213. The next prime is 266641144036261. The reversal of 266641144036243 is 342630441146662.

It is a happy number.

266641144036243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266641144036243 is a prime.

It is a super-4 number, since 4×266641144036243⁴ (a number of 59 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266641144036213) 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, 789505 + ... + 23106397.

It is an arithmetic number, because the mean of its divisors is an integer number (33799784004972).

Almost surely, 2^{266641144036243} is an apocalyptic number.

266641144036243 is a deficient number, since it is larger than the sum of its proper divisors (3757128003533).

266641144036243 is a wasteful number, since it uses less digits than its factorization.

266641144036243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22485245.

The product of its (nonzero) digits is 11943936, while the sum is 52.

The spelling of 266641144036243 in words is "two hundred sixty-six trillion, six hundred forty-one billion, one hundred forty-four million, thirty-six thousand, two hundred forty-three".