20980943104 has 81 divisors (see below), whose sum is σ = 46089312339. Its totient is φ = 9525204480.

The previous prime is 20980943077. The next prime is 20980943117. The reversal of 20980943104 is 40134908902.

The square root of 20980943104 is 144848.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25492837 + ... + 25493659.

Almost surely, 2^20980943104 is an apocalyptic number.

20980943104 is the 144848-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20980943104

20980943104 is an abundant number, since it is smaller than the sum of its proper divisors (25108369235).

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

20980943104 is an frugal number, since it uses more digits than its factorization.

20980943104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 20980943104 in words is "twenty billion, nine hundred eighty million, nine hundred forty-three thousand, one hundred four".