6405800843 has 12 divisors (see below), whose sum is σ = 6943005360. Its totient is φ = 5907466656.

The previous prime is 6405800831. The next prime is 6405800887. The reversal of 6405800843 is 3480085046.

It is a happy number.

It is not a de Polignac number, because 6405800843 - 2³² = 2110833547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6405800797 and 6405800806.

It is not an unprimeable number, because it can be changed into a prime (6405800143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167378 + ... + 202056.

It is an arithmetic number, because the mean of its divisors is an integer number (578583780).

Almost surely, 2^6405800843 is an apocalyptic number.

6405800843 is a deficient number, since it is larger than the sum of its proper divisors (537204517).

6405800843 is a wasteful number, since it uses less digits than its factorization.

6405800843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35798 (or 35785 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 6405800843 is about 80036.2470571928. The cubic root of 6405800843 is about 1857.1963042237.

Adding to 6405800843 its reverse (3480085046), we get a palindrome (9885885889).

The spelling of 6405800843 in words is "six billion, four hundred five million, eight hundred thousand, eight hundred forty-three".