660061564576813 has 40 divisors (see below), whose sum is σ = 807798051089280. Its totient is φ = 538564070026080.

The previous prime is 660061564576811. The next prime is 660061564576829. The reversal of 660061564576813 is 318675465160066.

It is not a de Polignac number, because 660061564576813 - 2¹ = 660061564576811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660061564576811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61814745 + ... + 71702062.

It is an arithmetic number, because the mean of its divisors is an integer number (20194951277232).

Almost surely, 2^{660061564576813} is an apocalyptic number.

It is an amenable number.

660061564576813 is a deficient number, since it is larger than the sum of its proper divisors (147736486512467).

660061564576813 is an equidigital number, since it uses as much as digits as its factorization.

660061564576813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133516935 (or 133516914 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 660061564576813 in words is "six hundred sixty trillion, sixty-one billion, five hundred sixty-four million, five hundred seventy-six thousand, eight hundred thirteen".