6456509375 has 12 divisors (see below), whose sum is σ = 8070124104. Its totient is φ = 5165205000.

The previous prime is 6456509369. The next prime is 6456509387. The reversal of 6456509375 is 5739056546.

It is a happy number.

It is not a de Polignac number, because 6456509375 - 2⁴ = 6456509359 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029917 + ... + 1036166.

It is an arithmetic number, because the mean of its divisors is an integer number (672510342).

Almost surely, 2^6456509375 is an apocalyptic number.

6456509375 is a deficient number, since it is larger than the sum of its proper divisors (1613614729).

6456509375 is an frugal number, since it uses more digits than its factorization.

6456509375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066108 (or 2066088 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 50.

The square root of 6456509375 is about 80352.4074001520. The cubic root of 6456509375 is about 1862.0839723609.

The spelling of 6456509375 in words is "six billion, four hundred fifty-six million, five hundred nine thousand, three hundred seventy-five".