20816241445899 has 48 divisors (see below), whose sum is σ = 30318582438144. Its totient is φ = 13762227744000.

The previous prime is 20816241445897. The next prime is 20816241445913. The reversal of 20816241445899 is 99854414261802.

It is a happy number.

20816241445899 is a `hidden beast` number, since 2 + 0 + 8 + 1 + 6 + 2 + 4 + 1 + 44 + 589 + 9 = 666.

It is not a de Polignac number, because 20816241445899 - 2¹ = 20816241445897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20816241445891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3651328749 + ... + 3651334449.

It is an arithmetic number, because the mean of its divisors is an integer number (631637134128).

Almost surely, 2^{20816241445899} is an apocalyptic number.

20816241445899 is a deficient number, since it is larger than the sum of its proper divisors (9502340992245).

20816241445899 is a wasteful number, since it uses less digits than its factorization.

20816241445899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11428 (or 11425 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 20816241445899 in words is "twenty trillion, eight hundred sixteen billion, two hundred forty-one million, four hundred forty-five thousand, eight hundred ninety-nine".