438564242465834 has 64 divisors (see below), whose sum is σ = 688658773461120. Its totient is φ = 209319220051200.

The previous prime is 438564242465813. The next prime is 438564242465849.

It is a happy number.

438564242465834 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207822404 + ... + 209922080.

It is an arithmetic number, because the mean of its divisors is an integer number (10760293335330).

Almost surely, 2^{438564242465834} is an apocalyptic number.

438564242465834 is a deficient number, since it is larger than the sum of its proper divisors (250094530995286).

438564242465834 is a wasteful number, since it uses less digits than its factorization.

438564242465834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100135.

The product of its digits is 2123366400, while the sum is 68.

The spelling of 438564242465834 in words is "four hundred thirty-eight trillion, five hundred sixty-four billion, two hundred forty-two million, four hundred sixty-five thousand, eight hundred thirty-four".