6480045665 has 24 divisors (see below), whose sum is σ = 8240133888. Its totient is φ = 4891284000.

The previous prime is 6480045647. The next prime is 6480045673. The reversal of 6480045665 is 5665400846.

It is not a de Polignac number, because 6480045665 - 2²⁶ = 6412936801 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445904 + ... + 460206.

It is an arithmetic number, because the mean of its divisors is an integer number (343338912).

Almost surely, 2^6480045665 is an apocalyptic number.

It is an amenable number.

6480045665 is a deficient number, since it is larger than the sum of its proper divisors (1760088223).

6480045665 is a wasteful number, since it uses less digits than its factorization.

6480045665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14597 (or 14578 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 6480045665 is about 80498.7308285044. The cubic root of 6480045665 is about 1864.3438829377.

The spelling of 6480045665 in words is "six billion, four hundred eighty million, forty-five thousand, six hundred sixty-five".