20016843704880 has 160 divisors (see below), whose sum is σ = 67707492157440. Its totient is φ = 4851552675840.

The previous prime is 20016843704861. The next prime is 20016843704887. The reversal of 20016843704880 is 8840734861002.

It is not an unprimeable number, because it can be changed into a prime (20016843704887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11862561 + ... + 13444479.

It is an arithmetic number, because the mean of its divisors is an integer number (423171825984).

Almost surely, 2^{20016843704880} is an apocalyptic number.

20016843704880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20016843704880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33853746078720).

20016843704880 is an abundant number, since it is smaller than the sum of its proper divisors (47690648452560).

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

20016843704880 is a wasteful number, since it uses less digits than its factorization.

20016843704880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586739 (or 1586733 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 20016843704880 in words is "twenty trillion, sixteen billion, eight hundred forty-three million, seven hundred four thousand, eight hundred eighty".