843400338065 has 16 divisors (see below), whose sum is σ = 1018706008320. Its totient is φ = 670316570880.

The previous prime is 843400338043. The next prime is 843400338119. The reversal of 843400338065 is 560833004348.

843400338065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 843400338065 - 2¹⁰ = 843400337041 is a prime.

It is a super-2 number, since 2×843400338065² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330329 + ... + 1340118.

It is an arithmetic number, because the mean of its divisors is an integer number (63669125520).

Almost surely, 2^843400338065 is an apocalyptic number.

It is an amenable number.

843400338065 is a deficient number, since it is larger than the sum of its proper divisors (175305670255).

843400338065 is a wasteful number, since it uses less digits than its factorization.

843400338065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671112.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 843400338065 in words is "eight hundred forty-three billion, four hundred million, three hundred thirty-eight thousand, sixty-five".