2066808755420 has 24 divisors (see below), whose sum is σ = 4568735144400. Its totient is φ = 783211738752.

The previous prime is 2066808755413. The next prime is 2066808755423. The reversal of 2066808755420 is 245578086602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066808755423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2719484825 + ... + 2719485584.

It is an arithmetic number, because the mean of its divisors is an integer number (190363964350).

Almost surely, 2^{2066808755420} is an apocalyptic number.

2066808755420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066808755420 is an abundant number, since it is smaller than the sum of its proper divisors (2501926388980).

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

2066808755420 is a wasteful number, since it uses less digits than its factorization.

2066808755420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5438970437 (or 5438970435 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 2066808755420 in words is "two trillion, sixty-six billion, eight hundred eight million, seven hundred fifty-five thousand, four hundred twenty".