224721697889 has 4 divisors (see below), whose sum is σ = 242007982356. Its totient is φ = 207435413424.

The previous prime is 224721697853. The next prime is 224721697901. The reversal of 224721697889 is 988796127422.

224721697889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120004737889 + 104716960000 = 346417^2 + 323600^2 .

It is a cyclic number.

It is not a de Polignac number, because 224721697889 - 2¹² = 224721693793 is a prime.

It is a super-2 number, since 2×224721697889² (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 (224721697829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643142214 + ... + 8643142239.

It is an arithmetic number, because the mean of its divisors is an integer number (60501995589).

Almost surely, 2^224721697889 is an apocalyptic number.

It is an amenable number.

224721697889 is a deficient number, since it is larger than the sum of its proper divisors (17286284467).

224721697889 is a wasteful number, since it uses less digits than its factorization.

224721697889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286284466.

The product of its digits is 48771072, while the sum is 65.

The spelling of 224721697889 in words is "two hundred twenty-four billion, seven hundred twenty-one million, six hundred ninety-seven thousand, eight hundred eighty-nine".