20660646244008 has 16 divisors (see below), whose sum is σ = 51651615610080. Its totient is φ = 6886882081328.

The previous prime is 20660646244003. The next prime is 20660646244031. The reversal of 20660646244008 is 80044264606602.

It is not an unprimeable number, because it can be changed into a prime (20660646244003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430430130060 + ... + 430430130107.

It is an arithmetic number, because the mean of its divisors is an integer number (3228225975630).

Almost surely, 2^{20660646244008} is an apocalyptic number.

It is an amenable number.

20660646244008 is an abundant number, since it is smaller than the sum of its proper divisors (30990969366072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20660646244008 is a wasteful number, since it uses less digits than its factorization.

20660646244008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860860260176 (or 860860260172 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 48.

The spelling of 20660646244008 in words is "twenty trillion, six hundred sixty billion, six hundred forty-six million, two hundred forty-four thousand, eight".