6431539476 has 12 divisors (see below), whose sum is σ = 15006925472. Its totient is φ = 2143846488.

The previous prime is 6431539423. The next prime is 6431539487. The reversal of 6431539476 is 6749351346.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267980800 + ... + 267980823.

Almost surely, 2^6431539476 is an apocalyptic number.

It is an amenable number.

6431539476 is an abundant number, since it is smaller than the sum of its proper divisors (8575385996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6431539476 is a wasteful number, since it uses less digits than its factorization.

6431539476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535961630 (or 535961628 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 48.

The square root of 6431539476 is about 80196.8794654755. The cubic root of 6431539476 is about 1859.6803971613.

The spelling of 6431539476 in words is "six billion, four hundred thirty-one million, five hundred thirty-nine thousand, four hundred seventy-six".