664817825003 has 16 divisors (see below), whose sum is σ = 678801399360. Its totient is φ = 651017520000.

The previous prime is 664817824967. The next prime is 664817825033. The reversal of 664817825003 is 300528718466.

It is a cyclic number.

It is not a de Polignac number, because 664817825003 - 2⁶ = 664817824939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664817825033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3397301 + ... + 3587657.

It is an arithmetic number, because the mean of its divisors is an integer number (42425087460).

Almost surely, 2^664817825003 is an apocalyptic number.

664817825003 is a deficient number, since it is larger than the sum of its proper divisors (13983574357).

664817825003 is a wasteful number, since it uses less digits than its factorization.

664817825003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190838.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 664817825003 in words is "six hundred sixty-four billion, eight hundred seventeen million, eight hundred twenty-five thousand, three".