6815641472 has 16 divisors (see below), whose sum is σ = 13578036000. Its totient is φ = 3407820672.

The previous prime is 6815641471. The next prime is 6815641541. The reversal of 6815641472 is 2741465186.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6815641471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26623472 + ... + 26623727.

It is an arithmetic number, because the mean of its divisors is an integer number (848627250).

Almost surely, 2^6815641472 is an apocalyptic number.

It is an amenable number.

6815641472 is a deficient number, since it is larger than the sum of its proper divisors (6762394528).

6815641472 is an equidigital number, since it uses as much as digits as its factorization.

6815641472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53247213 (or 53247201 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 6815641472 is about 82556.8983913519. The cubic root of 6815641472 is about 1895.9879766844.

The spelling of 6815641472 in words is "six billion, eight hundred fifteen million, six hundred forty-one thousand, four hundred seventy-two".