20448641209 has 8 divisors (see below), whose sum is σ = 20559094400. Its totient is φ = 20338265376.

The previous prime is 20448641203. The next prime is 20448641249. The reversal of 20448641209 is 90214684402.

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

It is a cyclic number.

It is not a de Polignac number, because 20448641209 - 2⁵ = 20448641177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20448641203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556717 + ... + 592309.

It is an arithmetic number, because the mean of its divisors is an integer number (2569886800).

Almost surely, 2^20448641209 is an apocalyptic number.

It is an amenable number.

20448641209 is a deficient number, since it is larger than the sum of its proper divisors (110453191).

20448641209 is a wasteful number, since it uses less digits than its factorization.

20448641209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38679.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 20448641209 in words is "twenty billion, four hundred forty-eight million, six hundred forty-one thousand, two hundred nine".