843400338051 has 4 divisors (see below), whose sum is σ = 1124533784072. Its totient is φ = 562266892032.

The previous prime is 843400338043. The next prime is 843400338119. The reversal of 843400338051 is 150833004348.

843400338051 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 843400338051 - 2³ = 843400338043 is a prime.

It is a super-2 number, since 2×843400338051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (843400338031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140566723006 + ... + 140566723011.

It is an arithmetic number, because the mean of its divisors is an integer number (281133446018).

Almost surely, 2^843400338051 is an apocalyptic number.

843400338051 is a deficient number, since it is larger than the sum of its proper divisors (281133446021).

843400338051 is a wasteful number, since it uses less digits than its factorization.

843400338051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281133446020.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 843400338051 in words is "eight hundred forty-three billion, four hundred million, three hundred thirty-eight thousand, fifty-one".