6471236161 has 8 divisors (see below), whose sum is σ = 6969652200. Its totient is φ = 5972909952.

The previous prime is 6471236147. The next prime is 6471236203. The reversal of 6471236161 is 1616321746.

It can be written as a sum of positive squares in 4 ways, for example, as 49617936 + 6421618225 = 7044^2 + 80135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6471236161 - 2²³ = 6462847553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6471236161.

It is not an unprimeable number, because it can be changed into a prime (6471239161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246861 + ... + 271813.

It is an arithmetic number, because the mean of its divisors is an integer number (871206525).

Almost surely, 2^6471236161 is an apocalyptic number.

It is an amenable number.

6471236161 is a deficient number, since it is larger than the sum of its proper divisors (498416039).

6471236161 is a wasteful number, since it uses less digits than its factorization.

6471236161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44915.

The product of its digits is 36288, while the sum is 37.

The square root of 6471236161 is about 80443.9939398834. The cubic root of 6471236161 is about 1863.4986526181.

The spelling of 6471236161 in words is "six billion, four hundred seventy-one million, two hundred thirty-six thousand, one hundred sixty-one".