20992720000 has 320 divisors, whose sum is σ = 62901115200. Its totient is φ = 6815232000.

The previous prime is 20992719997. The next prime is 20992720031. The reversal of 20992720000 is 2729902.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10639014 + ... + 10640986.

It is an arithmetic number, because the mean of its divisors is an integer number (196565985).

Almost surely, 2^20992720000 is an apocalyptic number.

20992720000 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 20992720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31450557600).

20992720000 is an abundant number, since it is smaller than the sum of its proper divisors (41908395200).

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

20992720000 is an equidigital number, since it uses as much as digits as its factorization.

20992720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 20992720000 in words is "twenty billion, nine hundred ninety-two million, seven hundred twenty thousand".