6431571172 has 24 divisors (see below), whose sum is σ = 12834041976. Its totient is φ = 2793804288.

The previous prime is 6431571163. The next prime is 6431571187. The reversal of 6431571172 is 2711751346.

It can be written as a sum of positive squares in 4 ways, for example, as 68956416 + 6362614756 = 8304^2 + 79766^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3636883 + ... + 3638650.

It is an arithmetic number, because the mean of its divisors is an integer number (534751749).

Almost surely, 2^6431571172 is an apocalyptic number.

It is an amenable number.

6431571172 is a deficient number, since it is larger than the sum of its proper divisors (6402470804).

6431571172 is a wasteful number, since it uses less digits than its factorization.

6431571172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275567 (or 7275565 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 6431571172 is about 80197.0770789061. The cubic root of 6431571172 is about 1859.6834521237.

The spelling of 6431571172 in words is "six billion, four hundred thirty-one million, five hundred seventy-one thousand, one hundred seventy-two".