266004522265642 has 8 divisors (see below), whose sum is σ = 412765637998500. Its totient is φ = 128415976266144.

The previous prime is 266004522265631. The next prime is 266004522265681. The reversal of 266004522265642 is 246562225400662.

It can be written as a sum of positive squares in 2 ways, for example, as 264421779624601 + 1582742641041 = 16261051^2 + 1258071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 266004522265642.

It is an unprimeable number.

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, 2293142433267 + ... + 2293142433382.

Almost surely, 2^{266004522265642} is an apocalyptic number.

266004522265642 is a deficient number, since it is larger than the sum of its proper divisors (146761115732858).

266004522265642 is a wasteful number, since it uses less digits than its factorization.

266004522265642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586284866680.

The product of its (nonzero) digits is 16588800, while the sum is 52.

The spelling of 266004522265642 in words is "two hundred sixty-six trillion, four billion, five hundred twenty-two million, two hundred sixty-five thousand, six hundred forty-two".