2020021666020 has 96 divisors (see below), whose sum is σ = 6403087635840. Its totient is φ = 528508805760.

The previous prime is 2020021665989. The next prime is 2020021666049. The reversal of 2020021666020 is 206661200202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35261766 + ... + 35319005.

It is an arithmetic number, because the mean of its divisors is an integer number (66698829540).

Almost surely, 2^{2020021666020} is an apocalyptic number.

2020021666020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020021666020 is an abundant number, since it is smaller than the sum of its proper divisors (4383065969820).

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

2020021666020 is a wasteful number, since it uses less digits than its factorization.

2020021666020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70580842 (or 70580834 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 2020021666020 its reverse (206661200202), we get a palindrome (2226682866222).

The spelling of 2020021666020 in words is "two trillion, twenty billion, twenty-one million, six hundred sixty-six thousand, twenty".