6464144145 has 8 divisors (see below), whose sum is σ = 10342630656. Its totient is φ = 3447543536.

The previous prime is 6464144131. The next prime is 6464144177. The reversal of 6464144145 is 5414414646.

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 6464144145 - 2¹⁵ = 6464111377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215471457 + ... + 215471486.

It is an arithmetic number, because the mean of its divisors is an integer number (1292828832).

Almost surely, 2^6464144145 is an apocalyptic number.

It is an amenable number.

6464144145 is a deficient number, since it is larger than the sum of its proper divisors (3878486511).

6464144145 is a wasteful number, since it uses less digits than its factorization.

6464144145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430942951.

The product of its digits is 184320, while the sum is 39.

The square root of 6464144145 is about 80399.9013991933. The cubic root of 6464144145 is about 1862.8176496489.

The spelling of 6464144145 in words is "six billion, four hundred sixty-four million, one hundred forty-four thousand, one hundred forty-five".