266113016666623 has 16 divisors (see below), whose sum is σ = 304938641803264. Its totient is φ = 227489925120480.

The previous prime is 266113016666513. The next prime is 266113016666671. The reversal of 266113016666623 is 326666610311662.

It is a cyclic number.

It is not a de Polignac number, because 266113016666623 - 2²⁹ = 266112479795711 is a prime.

It is a super-2 number, since 2×266113016666623² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266113016666023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12714418 + ... + 26341648.

It is an arithmetic number, because the mean of its divisors is an integer number (19058665112704).

Almost surely, 2^{266113016666623} is an apocalyptic number.

266113016666623 is a deficient number, since it is larger than the sum of its proper divisors (38825625136641).

266113016666623 is a wasteful number, since it uses less digits than its factorization.

266113016666623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13634662.

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 266113016666623 in words is "two hundred sixty-six trillion, one hundred thirteen billion, sixteen million, six hundred sixty-six thousand, six hundred twenty-three".