426665440211123 has 16 divisors (see below), whose sum is σ = 448236428037120. Its totient is φ = 405593135637600.

The previous prime is 426665440211051. The next prime is 426665440211141. The reversal of 426665440211123 is 321112044566624.

It is a cyclic number.

It is not a de Polignac number, because 426665440211123 - 2²⁶ = 426665373102259 is a prime.

It is a super-2 number, since 2×426665440211123² (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 (426665440211173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86851268 + ... + 91632273.

It is an arithmetic number, because the mean of its divisors is an integer number (28014776752320).

Almost surely, 2^{426665440211123} is an apocalyptic number.

426665440211123 is a deficient number, since it is larger than the sum of its proper divisors (21570987825997).

426665440211123 is a wasteful number, since it uses less digits than its factorization.

426665440211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178484938.

The product of its (nonzero) digits is 1658880, while the sum is 47.

Adding to 426665440211123 its reverse (321112044566624), we get a palindrome (747777484777747).

The spelling of 426665440211123 in words is "four hundred twenty-six trillion, six hundred sixty-five billion, four hundred forty million, two hundred eleven thousand, one hundred twenty-three".