266866313842 has 4 divisors (see below), whose sum is σ = 400299470766. Its totient is φ = 133433156920.

The previous prime is 266866313827. The next prime is 266866313881. The reversal of 266866313842 is 248313668662.

266866313842 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.

It can be written as a sum of positive squares in only one way, i.e., 253553538681 + 13312775161 = 503541^2 + 115381^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 66716578459 + ... + 66716578462.

Almost surely, 2^266866313842 is an apocalyptic number.

266866313842 is a deficient number, since it is larger than the sum of its proper divisors (133433156924).

266866313842 is a wasteful number, since it uses less digits than its factorization.

266866313842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133433156923.

The product of its digits is 11943936, while the sum is 55.

The spelling of 266866313842 in words is "two hundred sixty-six billion, eight hundred sixty-six million, three hundred thirteen thousand, eight hundred forty-two".