21883796272144 has 45 divisors (see below), whose sum is σ = 42594156356157. Its totient is φ = 10891983748032.

The previous prime is 21883796272141. The next prime is 21883796272159. The reversal of 21883796272144 is 44127269738812.

The square root of 21883796272144 is 4678012.

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

It can be written as a sum of positive squares in only one way, i.e., 20381504809744 + 1502291462400 = 4514588^2 + 1225680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21883796272141) 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, 4285056439 + ... + 4285061545.

Almost surely, 2^{21883796272144} is an apocalyptic number.

21883796272144 is the 4678012-nd square number.

It is an amenable number.

21883796272144 is a deficient number, since it is larger than the sum of its proper divisors (20710360084013).

21883796272144 is an frugal number, since it uses more digits than its factorization.

21883796272144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680 (or 5338 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

The spelling of 21883796272144 in words is "twenty-one trillion, eight hundred eighty-three billion, seven hundred ninety-six million, two hundred seventy-two thousand, one hundred forty-four".