266444300640243 has 8 divisors (see below), whose sum is σ = 387555346385856. Its totient is φ = 161481394327400.

The previous prime is 266444300640227. The next prime is 266444300640247. The reversal of 266444300640243 is 342046003444662.

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 266444300640243 - 2⁴ = 266444300640227 is a prime.

It is a super-2 number, since 2×266444300640243² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266444300640192 and 266444300640201.

It is not an unprimeable number, because it can be changed into a prime (266444300640247) 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, 4037034858153 + ... + 4037034858218.

It is an arithmetic number, because the mean of its divisors is an integer number (48444418298232).

Almost surely, 2^{266444300640243} is an apocalyptic number.

266444300640243 is a deficient number, since it is larger than the sum of its proper divisors (121111045745613).

266444300640243 is a wasteful number, since it uses less digits than its factorization.

266444300640243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8074069716385.

The product of its (nonzero) digits is 7962624, while the sum is 48.

The spelling of 266444300640243 in words is "two hundred sixty-six trillion, four hundred forty-four billion, three hundred million, six hundred forty thousand, two hundred forty-three".