20660606049 has 8 divisors (see below), whose sum is σ = 27856997280. Its totient is φ = 13618976096.

The previous prime is 20660606041. The next prime is 20660606089. The reversal of 20660606049 is 94060606602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20660606049 - 2³ = 20660606041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20660605998 and 20660606016.

It is not an unprimeable number, because it can be changed into a prime (20660606041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38690007 + ... + 38690540.

It is an arithmetic number, because the mean of its divisors is an integer number (3482124660).

Almost surely, 2^20660606049 is an apocalyptic number.

It is an amenable number.

20660606049 is a deficient number, since it is larger than the sum of its proper divisors (7196391231).

20660606049 is an equidigital number, since it uses as much as digits as its factorization.

20660606049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77380639.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 20660606049 in words is "twenty billion, six hundred sixty million, six hundred six thousand, forty-nine".