6531808475 has 12 divisors (see below), whose sum is σ = 8378734560. Its totient is φ = 5045258400.

The previous prime is 6531808397. The next prime is 6531808487. The reversal of 6531808475 is 5748081356.

It is not a de Polignac number, because 6531808475 - 2¹⁶ = 6531742939 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4503971 + ... + 4505420.

It is an arithmetic number, because the mean of its divisors is an integer number (698227880).

Almost surely, 2^6531808475 is an apocalyptic number.

6531808475 is a deficient number, since it is larger than the sum of its proper divisors (1846926085).

6531808475 is a wasteful number, since it uses less digits than its factorization.

6531808475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009430 (or 9009425 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 6531808475 is about 80819.6045214278. The cubic root of 6531808475 is about 1869.2948693611.

The spelling of 6531808475 in words is "six billion, five hundred thirty-one million, eight hundred eight thousand, four hundred seventy-five".