6546644465 has 16 divisors (see below), whose sum is σ = 8349744000. Its totient is φ = 4913488512.

The previous prime is 6546644431. The next prime is 6546644471. The reversal of 6546644465 is 5644466456.

It is a cyclic number.

It is not a de Polignac number, because 6546644465 - 2³⁰ = 5472902641 is a prime.

It is a super-2 number, since 2×6546644465² = 85717107502230272450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324740 + ... + 344309.

It is an arithmetic number, because the mean of its divisors is an integer number (521859000).

Almost surely, 2^6546644465 is an apocalyptic number.

It is an amenable number.

6546644465 is a deficient number, since it is larger than the sum of its proper divisors (1803099535).

6546644465 is a wasteful number, since it uses less digits than its factorization.

6546644465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669176.

The product of its digits is 8294400, while the sum is 50.

The square root of 6546644465 is about 80911.3370610077. The cubic root of 6546644465 is about 1870.7090703236.

The spelling of 6546644465 in words is "six billion, five hundred forty-six million, six hundred forty-four thousand, four hundred sixty-five".