6447460255 has 4 divisors (see below), whose sum is σ = 7736952312. Its totient is φ = 5157968200.

The previous prime is 6447460241. The next prime is 6447460301. The reversal of 6447460255 is 5520647446.

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

It is not a de Polignac number, because 6447460255 - 2⁵ = 6447460223 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 644746021 + ... + 644746030.

It is an arithmetic number, because the mean of its divisors is an integer number (1934238078).

Almost surely, 2^6447460255 is an apocalyptic number.

6447460255 is a deficient number, since it is larger than the sum of its proper divisors (1289492057).

6447460255 is a wasteful number, since it uses less digits than its factorization.

6447460255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289492056.

The product of its (nonzero) digits is 806400, while the sum is 43.

The square root of 6447460255 is about 80296.0787025120. The cubic root of 6447460255 is about 1861.2136310969.

The spelling of 6447460255 in words is "six billion, four hundred forty-seven million, four hundred sixty thousand, two hundred fifty-five".