20017850112 has 504 divisors, whose sum is σ = 66558068864. Its totient is φ = 5965996032.

The previous prime is 20017850093. The next prime is 20017850113. The reversal of 20017850112 is 21105871002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20017850113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 89766033 + ... + 89766255.

Almost surely, 2^20017850112 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 20017850112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33279034432).

20017850112 is an abundant number, since it is smaller than the sum of its proper divisors (46540218752).

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

20017850112 is an equidigital number, since it uses as much as digits as its factorization.

20017850112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The spelling of 20017850112 in words is "twenty billion, seventeen million, eight hundred fifty thousand, one hundred twelve".