20448479199 has 8 divisors (see below), whose sum is σ = 28450058112. Its totient is φ = 13039609880.

The previous prime is 20448479197. The next prime is 20448479251. The reversal of 20448479199 is 99197484402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20448479199 - 2¹ = 20448479197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448479197) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 148177317 + ... + 148177454.

It is an arithmetic number, because the mean of its divisors is an integer number (3556257264).

Almost surely, 2^20448479199 is an apocalyptic number.

20448479199 is a deficient number, since it is larger than the sum of its proper divisors (8001578913).

20448479199 is a wasteful number, since it uses less digits than its factorization.

20448479199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296354797.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 20448479199 in words is "twenty billion, four hundred forty-eight million, four hundred seventy-nine thousand, one hundred ninety-nine".