20489075712 has 352 divisors, whose sum is σ = 70256970240. Its totient is φ = 5849542656.

The previous prime is 20489075687. The next prime is 20489075743. The reversal of 20489075712 is 21757098402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15675763 + ... + 15677069.

Almost surely, 2^20489075712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20489075712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35128485120).

20489075712 is an abundant number, since it is smaller than the sum of its proper divisors (49767894528).

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

20489075712 is an frugal number, since it uses more digits than its factorization.

20489075712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 20489075712 in words is "twenty billion, four hundred eighty-nine million, seventy-five thousand, seven hundred twelve".