20844524121844 has 12 divisors (see below), whose sum is σ = 36606814449184. Its totient is φ = 10385434279224.

The previous prime is 20844524121761. The next prime is 20844524121893. The reversal of 20844524121844 is 44812142544802.

It is a super-2 number, since 2×20844524121844² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9206944152 + ... + 9206946415.

Almost surely, 2^{20844524121844} is an apocalyptic number.

It is an amenable number.

20844524121844 is a deficient number, since it is larger than the sum of its proper divisors (15762290327340).

20844524121844 is a wasteful number, since it uses less digits than its factorization.

20844524121844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18413890854 (or 18413890852 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 49.

The spelling of 20844524121844 in words is "twenty trillion, eight hundred forty-four billion, five hundred twenty-four million, one hundred twenty-one thousand, eight hundred forty-four".