266648998959 has 72 divisors (see below), whose sum is σ = 445466250528. Its totient is φ = 150562177920.

The previous prime is 266648998907. The next prime is 266648999033. The reversal of 266648998959 is 959899846662.

266648998959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266648998959 - 2¹⁶ = 266648933423 is a prime.

It is a super-2 number, since 2×266648998959² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266648998559) 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 71 ways as a sum of consecutive naturals, for example, 403402089 + ... + 403402749.

Almost surely, 2^266648998959 is an apocalyptic number.

266648998959 is a deficient number, since it is larger than the sum of its proper divisors (178817251569).

266648998959 is a wasteful number, since it uses less digits than its factorization.

266648998959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1195 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 81.

The spelling of 266648998959 in words is "two hundred sixty-six billion, six hundred forty-eight million, nine hundred ninety-eight thousand, nine hundred fifty-nine".