20989416304 has 20 divisors (see below), whose sum is σ = 42069305160. Its totient is φ = 10132821440.

The previous prime is 20989416293. The next prime is 20989416313. The reversal of 20989416304 is 40361498902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22617442 + ... + 22618369.

It is an arithmetic number, because the mean of its divisors is an integer number (2103465258).

Almost surely, 2^20989416304 is an apocalyptic number.

It is an amenable number.

20989416304 is an abundant number, since it is smaller than the sum of its proper divisors (21079888856).

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

20989416304 is a wasteful number, since it uses less digits than its factorization.

20989416304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45235848 (or 45235842 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 20989416304 in words is "twenty billion, nine hundred eighty-nine million, four hundred sixteen thousand, three hundred four".