266142461066255 has 4 divisors (see below), whose sum is σ = 319370953279512. Its totient is φ = 212913968853000.

The previous prime is 266142461066239. The next prime is 266142461066257. The reversal of 266142461066255 is 552660164241662.

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

It is not a de Polignac number, because 266142461066255 - 2⁴ = 266142461066239 is a prime.

It is a super-2 number, since 2×266142461066255² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266142461066255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266142461066257) 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, 26614246106621 + ... + 26614246106630.

It is an arithmetic number, because the mean of its divisors is an integer number (79842738319878).

Almost surely, 2^{266142461066255} is an apocalyptic number.

266142461066255 is a deficient number, since it is larger than the sum of its proper divisors (53228492213257).

266142461066255 is an equidigital number, since it uses as much as digits as its factorization.

266142461066255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53228492213256.

The product of its (nonzero) digits is 24883200, while the sum is 56.

The spelling of 266142461066255 in words is "two hundred sixty-six trillion, one hundred forty-two billion, four hundred sixty-one million, sixty-six thousand, two hundred fifty-five".