20144403198 has 144 divisors (see below), whose sum is σ = 48578529168. Its totient is φ = 6010329600.

The previous prime is 20144403163. The next prime is 20144403203. The reversal of 20144403198 is 89130444102.

It is a happy number.

20144403198 is a `hidden beast` number, since 20 + 1 + 4 + 440 + 3 + 198 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17937465 + ... + 17938587.

It is an arithmetic number, because the mean of its divisors is an integer number (337350897).

Almost surely, 2^20144403198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20144403198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24289264584).

20144403198 is an abundant number, since it is smaller than the sum of its proper divisors (28434125970).

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

20144403198 is a wasteful number, since it uses less digits than its factorization.

20144403198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 20144403198 in words is "twenty billion, one hundred forty-four million, four hundred three thousand, one hundred ninety-eight".