6664653112785 has 32 divisors (see below), whose sum is σ = 10952375990400. Its totient is φ = 3458184127488.

The previous prime is 6664653112763. The next prime is 6664653112801. The reversal of 6664653112785 is 5872113564666.

It is a happy number.

It is not a de Polignac number, because 6664653112785 - 2¹¹ = 6664653110737 is a prime.

It is a super-2 number, since 2×6664653112785² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8098489 + ... + 8883401.

It is an arithmetic number, because the mean of its divisors is an integer number (342261749700).

Almost surely, 2^{6664653112785} is an apocalyptic number.

It is an amenable number.

6664653112785 is a deficient number, since it is larger than the sum of its proper divisors (4287722877615).

6664653112785 is a wasteful number, since it uses less digits than its factorization.

6664653112785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800257.

The product of its digits is 43545600, while the sum is 60.

The spelling of 6664653112785 in words is "six trillion, six hundred sixty-four billion, six hundred fifty-three million, one hundred twelve thousand, seven hundred eighty-five".