664342144513 has 4 divisors (see below), whose sum is σ = 699307520560. Its totient is φ = 629376768468.

The previous prime is 664342144489. The next prime is 664342144549. The reversal of 664342144513 is 315441243466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 664342144513 - 2¹³ = 664342136321 is a prime.

It is a super-2 number, since 2×664342144513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664342144513.

It is not an unprimeable number, because it can be changed into a prime (664342124513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17482687995 + ... + 17482688032.

It is an arithmetic number, because the mean of its divisors is an integer number (174826880140).

Almost surely, 2^664342144513 is an apocalyptic number.

It is an amenable number.

664342144513 is a deficient number, since it is larger than the sum of its proper divisors (34965376047).

664342144513 is a wasteful number, since it uses less digits than its factorization.

664342144513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34965376046.

The product of its digits is 829440, while the sum is 43.

Adding to 664342144513 its reverse (315441243466), we get a palindrome (979783387979).

The spelling of 664342144513 in words is "six hundred sixty-four billion, three hundred forty-two million, one hundred forty-four thousand, five hundred thirteen".