6531641996 has 12 divisors (see below), whose sum is σ = 12469498440. Its totient is φ = 2968928160.

The previous prime is 6531641983. The next prime is 6531642011. The reversal of 6531641996 is 6991461356.

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, 74223161 + ... + 74223248.

It is an arithmetic number, because the mean of its divisors is an integer number (1039124870).

Almost surely, 2^6531641996 is an apocalyptic number.

It is an amenable number.

6531641996 is a deficient number, since it is larger than the sum of its proper divisors (5937856444).

6531641996 is a wasteful number, since it uses less digits than its factorization.

6531641996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148446424 (or 148446422 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 50.

The square root of 6531641996 is about 80818.5745729285. The cubic root of 6531641996 is about 1869.2789880532.

The spelling of 6531641996 in words is "six billion, five hundred thirty-one million, six hundred forty-one thousand, nine hundred ninety-six".