438438342287443 has 4 divisors (see below), whose sum is σ = 452581514619328. Its totient is φ = 424295169955560.

The previous prime is 438438342287423. The next prime is 438438342287497. The reversal of 438438342287443 is 344782243834834.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 438438342287443 - 2³⁷ = 438300903333971 is a prime.

It is a super-2 number, since 2×438438342287443² (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 (438438342287423) 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, 7071586165896 + ... + 7071586165957.

It is an arithmetic number, because the mean of its divisors is an integer number (113145378654832).

Almost surely, 2^{438438342287443} is an apocalyptic number.

438438342287443 is a deficient number, since it is larger than the sum of its proper divisors (14143172331885).

438438342287443 is a wasteful number, since it uses less digits than its factorization.

438438342287443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143172331884.

The product of its digits is 1189085184, while the sum is 67.

The spelling of 438438342287443 in words is "four hundred thirty-eight trillion, four hundred thirty-eight billion, three hundred forty-two million, two hundred eighty-seven thousand, four hundred forty-three".