266144304542353 has 4 divisors (see below), whose sum is σ = 272635629043428. Its totient is φ = 259652980041280.

The previous prime is 266144304542341. The next prime is 266144304542377. The reversal of 266144304542353 is 353245403441662.

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 86744318477569 + 179399986064784 = 9313663^2 + 13394028^2 .

It is a cyclic number.

It is not a de Polignac number, because 266144304542353 - 2³⁷ = 266006865588881 is a prime.

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 266144304542353.

It is not an unprimeable number, because it can be changed into a prime (266144304542383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245662250476 + ... + 3245662250557.

It is an arithmetic number, because the mean of its divisors is an integer number (68158907260857).

Almost surely, 2^{266144304542353} is an apocalyptic number.

It is an amenable number.

266144304542353 is a deficient number, since it is larger than the sum of its proper divisors (6491324501075).

266144304542353 is an equidigital number, since it uses as much as digits as its factorization.

266144304542353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491324501074.

The product of its (nonzero) digits is 24883200, while the sum is 52.

The spelling of 266144304542353 in words is "two hundred sixty-six trillion, one hundred forty-four billion, three hundred four million, five hundred forty-two thousand, three hundred fifty-three".