20206821466880 has 36 divisors (see below), whose sum is σ = 48401652047952. Its totient is φ = 8082728586240.

The previous prime is 20206821466861. The next prime is 20206821466889. The reversal of 20206821466880 is 8866412860202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20206821466889) 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, 7893288356 + ... + 7893290915.

Almost surely, 2^{20206821466880} is an apocalyptic number.

20206821466880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20206821466880 is an abundant number, since it is smaller than the sum of its proper divisors (28194830581072).

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

20206821466880 is an equidigital number, since it uses as much as digits as its factorization.

20206821466880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15786579292 (or 15786579278 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 20206821466880 in words is "twenty trillion, two hundred six billion, eight hundred twenty-one million, four hundred sixty-six thousand, eight hundred eighty".