664315265163 has 144 divisors (see below), whose sum is σ = 1064360564064. Its totient is φ = 366896640000.

The previous prime is 664315265161. The next prime is 664315265171. The reversal of 664315265163 is 361562513466.

It is not a de Polignac number, because 664315265163 - 2¹ = 664315265161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664315265161) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3839972545 + ... + 3839972717.

It is an arithmetic number, because the mean of its divisors is an integer number (7391392806).

Almost surely, 2^664315265163 is an apocalyptic number.

664315265163 is a deficient number, since it is larger than the sum of its proper divisors (400045298901).

664315265163 is a wasteful number, since it uses less digits than its factorization.

664315265163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 366 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 48.

The spelling of 664315265163 in words is "six hundred sixty-four billion, three hundred fifteen million, two hundred sixty-five thousand, one hundred sixty-three".