20816044122272 has 192 divisors, whose sum is σ = 47910168520704. Its totient is φ = 8719069793280.

The previous prime is 20816044122227. The next prime is 20816044122287. The reversal of 20816044122272 is 27222144061802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 954722123 + ... + 954743925.

It is an arithmetic number, because the mean of its divisors is an integer number (249532127712).

Almost surely, 2^{20816044122272} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20816044122272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23955084260352).

20816044122272 is an abundant number, since it is smaller than the sum of its proper divisors (27094124398432).

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

20816044122272 is a wasteful number, since it uses less digits than its factorization.

20816044122272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22411 (or 22403 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The spelling of 20816044122272 in words is "twenty trillion, eight hundred sixteen billion, forty-four million, one hundred twenty-two thousand, two hundred seventy-two".