6406843451 has 4 divisors (see below), whose sum is σ = 6419892504. Its totient is φ = 6393794400.

The previous prime is 6406843427. The next prime is 6406843463. The reversal of 6406843451 is 1543486046.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6406843451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6406843399 and 6406843408.

It is not an unprimeable number, because it can be changed into a prime (6406842451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6523790 + ... + 6524771.

It is an arithmetic number, because the mean of its divisors is an integer number (1604973126).

Almost surely, 2^6406843451 is an apocalyptic number.

6406843451 is a deficient number, since it is larger than the sum of its proper divisors (13049053).

6406843451 is a wasteful number, since it uses less digits than its factorization.

6406843451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049052.

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 6406843451 is about 80042.7601410646. The cubic root of 6406843451 is about 1857.2970578338.

The spelling of 6406843451 in words is "six billion, four hundred six million, eight hundred forty-three thousand, four hundred fifty-one".