266113426664461 has 4 divisors (see below), whose sum is σ = 266113618780924. Its totient is φ = 266113234548000.

The previous prime is 266113426664413. The next prime is 266113426664509. The reversal of 266113426664461 is 164466624311662.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (266113426664413) and next prime (266113426664509).

It can be written as a sum of positive squares in 2 ways, for example, as 27884419524900 + 238229007139561 = 5280570^2 + 15434669^2 .

It is a cyclic number.

It is not a de Polignac number, because 266113426664461 - 2⁹ = 266113426663949 is a prime.

It is a super-2 number, since 2×266113426664461² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266113426664396 and 266113426664405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266113426064461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93965280 + ... + 96755881.

It is an arithmetic number, because the mean of its divisors is an integer number (66528404695231).

Almost surely, 2^{266113426664461} is an apocalyptic number.

It is an amenable number.

266113426664461 is a deficient number, since it is larger than the sum of its proper divisors (192116463).

266113426664461 is a wasteful number, since it uses less digits than its factorization.

266113426664461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192116462.

The product of its digits is 35831808, while the sum is 58.

The spelling of 266113426664461 in words is "two hundred sixty-six trillion, one hundred thirteen billion, four hundred twenty-six million, six hundred sixty-four thousand, four hundred sixty-one".