664463612066507 has 6 divisors (see below), whose sum is σ = 730360829792244. Its totient is φ = 604057829151260.

The previous prime is 664463612066467. The next prime is 664463612066537. The reversal of 664463612066507 is 705660216364466.

It is a de Polignac number, because none of the positive numbers 2^k-664463612066507 is a prime.

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 664463612066507.

It is not an unprimeable number, because it can be changed into a prime (664463612066537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2745717405113 + ... + 2745717405354.

It is an arithmetic number, because the mean of its divisors is an integer number (121726804965374).

Almost surely, 2^{664463612066507} is an apocalyptic number.

664463612066507 is a deficient number, since it is larger than the sum of its proper divisors (65897217725737).

664463612066507 is a wasteful number, since it uses less digits than its factorization.

664463612066507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491434810489 (or 5491434810478 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 62.

The spelling of 664463612066507 in words is "six hundred sixty-four trillion, four hundred sixty-three billion, six hundred twelve million, sixty-six thousand, five hundred seven".