6431971472 has 10 divisors (see below), whose sum is σ = 12461944758. Its totient is φ = 3215985728.

The previous prime is 6431971463. The next prime is 6431971477. The reversal of 6431971472 is 2741791346.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6413447056 + 18524416 = 80084^2 + 4304^2 .

It is not an unprimeable number, because it can be changed into a prime (6431971477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200999093 + ... + 200999124.

Almost surely, 2^6431971472 is an apocalyptic number.

It is an amenable number.

6431971472 is a deficient number, since it is larger than the sum of its proper divisors (6029973286).

6431971472 is a wasteful number, since it uses less digits than its factorization.

6431971472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401998225 (or 401998219 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 6431971472 is about 80199.5727669418. The cubic root of 6431971472 is about 1859.7220334606.

The spelling of 6431971472 in words is "six billion, four hundred thirty-one million, nine hundred seventy-one thousand, four hundred seventy-two".