6400343712 has 48 divisors (see below), whose sum is σ = 19201033152. Its totient is φ = 1828669440.

The previous prime is 6400343683. The next prime is 6400343713. The reversal of 6400343712 is 2173430046.

It is a tau number, because it is divible by the number of its divisors (48).

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 6400343712.

It is not an unprimeable number, because it can be changed into a prime (6400343713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4761489 + ... + 4762832.

It is an arithmetic number, because the mean of its divisors is an integer number (400021524).

Almost surely, 2^6400343712 is an apocalyptic number.

It is an amenable number.

6400343712 is an abundant number, since it is smaller than the sum of its proper divisors (12800689440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6400343712 is a wasteful number, since it uses less digits than its factorization.

6400343712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9524341 (or 9524333 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 6400343712 is about 80002.1481711585. The cubic root of 6400343712 is about 1856.6687697206.

Adding to 6400343712 its reverse (2173430046), we get a palindrome (8573773758).

The spelling of 6400343712 in words is "six billion, four hundred million, three hundred forty-three thousand, seven hundred twelve".