664752713528 has 8 divisors (see below), whose sum is σ = 1246411337880. Its totient is φ = 332376356760.

The previous prime is 664752713479. The next prime is 664752713531. The reversal of 664752713528 is 825317257466.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41547044588 + ... + 41547044603.

It is an arithmetic number, because the mean of its divisors is an integer number (155801417235).

Almost surely, 2^664752713528 is an apocalyptic number.

It is an amenable number.

664752713528 is a deficient number, since it is larger than the sum of its proper divisors (581658624352).

664752713528 is a wasteful number, since it uses less digits than its factorization.

664752713528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83094089197 (or 83094089193 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 56.

The spelling of 664752713528 in words is "six hundred sixty-four billion, seven hundred fifty-two million, seven hundred thirteen thousand, five hundred twenty-eight".