8046721465 has 16 divisors (see below), whose sum is σ = 10079728128. Its totient is φ = 6155148736.

The previous prime is 8046721457. The next prime is 8046721499. The reversal of 8046721465 is 5641276408.

It is a cyclic number.

It is not a de Polignac number, because 8046721465 - 2³ = 8046721457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328224 + ... + 351886.

It is an arithmetic number, because the mean of its divisors is an integer number (629983008).

Almost surely, 2^8046721465 is an apocalyptic number.

It is an amenable number.

8046721465 is a deficient number, since it is larger than the sum of its proper divisors (2033006663).

8046721465 is a wasteful number, since it uses less digits than its factorization.

8046721465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26648.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 8046721465 is about 89703.5198027368. The cubic root of 8046721465 is about 2003.8859004158.

The spelling of 8046721465 in words is "eight billion, forty-six million, seven hundred twenty-one thousand, four hundred sixty-five".