20844547285338 has 96 divisors (see below), whose sum is σ = 55162009977984. Its totient is φ = 5552870777856.

The previous prime is 20844547285307. The next prime is 20844547285351. The reversal of 20844547285338 is 83358274544802.

It is a happy number.

20844547285338 is a `hidden beast` number, since 2 + 0 + 8 + 4 + 4 + 547 + 2 + 8 + 53 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45244395 + ... + 45702782.

It is an arithmetic number, because the mean of its divisors is an integer number (574604270604).

Almost surely, 2^{20844547285338} is an apocalyptic number.

20844547285338 is an abundant number, since it is smaller than the sum of its proper divisors (34317462692646).

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

20844547285338 is a wasteful number, since it uses less digits than its factorization.

20844547285338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90947316 (or 90947313 counting only the distinct ones).

The product of its (nonzero) digits is 206438400, while the sum is 63.

The spelling of 20844547285338 in words is "twenty trillion, eight hundred forty-four billion, five hundred forty-seven million, two hundred eighty-five thousand, three hundred thirty-eight".