266444043312043 has 4 divisors (see below), whose sum is σ = 270811978448368. Its totient is φ = 262076108175720.

The previous prime is 266444043311893. The next prime is 266444043312059. The reversal of 266444043312043 is 340213340444662.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266444043312043 is a prime.

It is a super-2 number, since 2×266444043312043² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266444043311984 and 266444043312002.

It is not an unprimeable number, because it can be changed into a prime (266444043312743) 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, 2183967568071 + ... + 2183967568192.

It is an arithmetic number, because the mean of its divisors is an integer number (67702994612092).

Almost surely, 2^{266444043312043} is an apocalyptic number.

266444043312043 is a deficient number, since it is larger than the sum of its proper divisors (4367935136325).

266444043312043 is an equidigital number, since it uses as much as digits as its factorization.

266444043312043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367935136324.

The product of its (nonzero) digits is 3981312, while the sum is 46.

The spelling of 266444043312043 in words is "two hundred sixty-six trillion, four hundred forty-four billion, forty-three million, three hundred twelve thousand, forty-three".