20843443273444 has 27 divisors (see below), whose sum is σ = 40093676028553. Its totient is φ = 9474246742400.

The previous prime is 20843443273441. The next prime is 20843443273447. The reversal of 20843443273444 is 44437234434802.

The square root of 20843443273444 is 4565462.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (20843443273441) and next prime (20843443273447).

It can be written as a sum of positive squares in only one way, i.e., 11438181033444 + 9405262240000 = 3382038^2 + 3066800^2 .

It is a super-2 number, since 2×20843443273444² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20843443273391 and 20843443273400.

It is not an unprimeable number, because it can be changed into a prime (20843443273441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 100336404 + ... + 100543924.

Almost surely, 2^{20843443273444} is an apocalyptic number.

20843443273444 is the 4565462-nd square number.

It is an amenable number.

20843443273444 is a deficient number, since it is larger than the sum of its proper divisors (19250232755109).

20843443273444 is an frugal number, since it uses more digits than its factorization.

20843443273444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415068 (or 207534 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 52.

The spelling of 20843443273444 in words is "twenty trillion, eight hundred forty-three billion, four hundred forty-three million, two hundred seventy-three thousand, four hundred forty-four".