266413256401451 has 16 divisors (see below), whose sum is σ = 272251348072704. Its totient is φ = 260637942038304.

The previous prime is 266413256401429. The next prime is 266413256401549. The reversal of 266413256401451 is 154104652314662.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 266413256401451 - 2¹⁸ = 266413256139307 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 266413256401451.

It is not an unprimeable number, because it can be changed into a prime (266413256401351) 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 15 ways as a sum of consecutive naturals, for example, 223963385 + ... + 225149781.

It is an arithmetic number, because the mean of its divisors is an integer number (17015709254544).

Almost surely, 2^{266413256401451} is an apocalyptic number.

266413256401451 is a deficient number, since it is larger than the sum of its proper divisors (5838091671253).

266413256401451 is a wasteful number, since it uses less digits than its factorization.

266413256401451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212850.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 266413256401451 in words is "two hundred sixty-six trillion, four hundred thirteen billion, two hundred fifty-six million, four hundred one thousand, four hundred fifty-one".