800042861438 has 4 divisors (see below), whose sum is σ = 1200064292160. Its totient is φ = 400021430718.

The previous prime is 800042861389. The next prime is 800042861459. The reversal of 800042861438 is 834168240008.

800042861438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200010715358 + ... + 200010715361.

It is an arithmetic number, because the mean of its divisors is an integer number (300016073040).

Almost surely, 2^800042861438 is an apocalyptic number.

800042861438 is a deficient number, since it is larger than the sum of its proper divisors (400021430722).

800042861438 is a wasteful number, since it uses less digits than its factorization.

800042861438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400021430721.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 800042861438 in words is "eight hundred billion, forty-two million, eight hundred sixty-one thousand, four hundred thirty-eight".