266374555247 has 4 divisors (see below), whose sum is σ = 266375759496. Its totient is φ = 266373351000.

The previous prime is 266374555219. The next prime is 266374555301. The reversal of 266374555247 is 742555473662.

266374555247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 266374555247 - 2⁸ = 266374554991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266374555192 and 266374555201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266374555147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164129 + ... + 748122.

It is an arithmetic number, because the mean of its divisors is an integer number (66593939874).

Almost surely, 2^266374555247 is an apocalyptic number.

266374555247 is a deficient number, since it is larger than the sum of its proper divisors (1204249).

266374555247 is an equidigital number, since it uses as much as digits as its factorization.

266374555247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204248.

The product of its digits is 42336000, while the sum is 56.

The spelling of 266374555247 in words is "two hundred sixty-six billion, three hundred seventy-four million, five hundred fifty-five thousand, two hundred forty-seven".