266212300114561 has 4 divisors (see below), whose sum is σ = 275392034601300. Its totient is φ = 257032565627824.

The previous prime is 266212300114529. The next prime is 266212300114589. The reversal of 266212300114561 is 165411003212662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 126122445680625 + 140089854433936 = 11230425^2 + 11835956^2 .

It is a cyclic number.

It is not a de Polignac number, because 266212300114561 - 2⁵ = 266212300114529 is a prime.

It is a super-2 number, since 2×266212300114561² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266212300114591) 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, 4589867243326 + ... + 4589867243383.

It is an arithmetic number, because the mean of its divisors is an integer number (68848008650325).

Almost surely, 2^{266212300114561} is an apocalyptic number.

It is an amenable number.

266212300114561 is a deficient number, since it is larger than the sum of its proper divisors (9179734486739).

266212300114561 is an equidigital number, since it uses as much as digits as its factorization.

266212300114561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179734486738.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 266212300114561 in words is "two hundred sixty-six trillion, two hundred twelve billion, three hundred million, one hundred fourteen thousand, five hundred sixty-one".