224477911681 has 9 divisors (see below), whose sum is σ = 226770812419. Its totient is φ = 222207979000.

The previous prime is 224477911673. The next prime is 224477911709. The reversal of 224477911681 is 186119774422.

The square root of 224477911681 is 473791.

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., 215675719281 + 8802192400 = 464409^2 + 93820^2 .

It is not a de Polignac number, because 224477911681 - 2³ = 224477911673 is a prime.

It is a super-2 number, since 2×224477911681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224477911601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47850546 + ... + 47855236.

Almost surely, 2^224477911681 is an apocalyptic number.

224477911681 is the 473791-st square number.

224477911681 is the 236896-th centered octagonal number.

It is an amenable number.

224477911681 is a deficient number, since it is larger than the sum of its proper divisors (2292900738).

224477911681 is an frugal number, since it uses more digits than its factorization.

224477911681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9584 (or 4792 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The spelling of 224477911681 in words is "two hundred twenty-four billion, four hundred seventy-seven million, nine hundred eleven thousand, six hundred eighty-one".