2066686244624 has 20 divisors (see below), whose sum is σ = 4004230106844. Its totient is φ = 1033336539648.

The previous prime is 2066686244621. The next prime is 2066686244629. The reversal of 2066686244624 is 4264426866602.

It can be written as a sum of positive squares in 2 ways, for example, as 940837921024 + 1125848323600 = 969968^2 + 1061060^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2066686244624.

It is not an unprimeable number, because it can be changed into a prime (2066686244621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3073004 + ... + 3684660.

Almost surely, 2^{2066686244624} is an apocalyptic number.

It is an amenable number.

2066686244624 is a deficient number, since it is larger than the sum of its proper divisors (1937543862220).

2066686244624 is a wasteful number, since it uses less digits than its factorization.

2066686244624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822842 (or 822836 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 56.

The spelling of 2066686244624 in words is "two trillion, sixty-six billion, six hundred eighty-six million, two hundred forty-four thousand, six hundred twenty-four".