266091426816 has 44 divisors (see below), whose sum is σ = 709230673152. Its totient is φ = 88697141248.

The previous prime is 266091426767. The next prime is 266091426817. The reversal of 266091426816 is 618624190662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266091426817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43306080 + ... + 43312223.

Almost surely, 2^266091426816 is an apocalyptic number.

It is an amenable number.

266091426816 is an abundant number, since it is smaller than the sum of its proper divisors (443139246336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266091426816 is an equidigital number, since it uses as much as digits as its factorization.

266091426816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86618326 (or 86618308 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 266091426816 in words is "two hundred sixty-six billion, ninety-one million, four hundred twenty-six thousand, eight hundred sixteen".