802024722241681 has 3 divisors (see below), whose sum is σ = 802024750561723. Its totient is φ = 802024693921640.

The previous prime is 802024722241667. The next prime is 802024722241753. The reversal of 802024722241681 is 186142227420208.

The square root of 802024722241681 is 28320041.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 419723683891281 + 382301038350400 = 20487159^2 + 19552520^2 .

It is not a de Polignac number, because 802024722241681 - 2¹¹ = 802024722239633 is a prime.

It is a super-2 number, since 2×802024722241681² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802024722247681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14160021 + ... + 42480061.

Almost surely, 2^{802024722241681} is an apocalyptic number.

802024722241681 is the 28320041-st square number.

802024722241681 is the 14160021-st centered octagonal number.

It is an amenable number.

802024722241681 is a deficient number, since it is larger than the sum of its proper divisors (28320042).

802024722241681 is an frugal number, since it uses more digits than its factorization.

802024722241681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56640082 (or 28320041 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 49.

Adding to 802024722241681 its reverse (186142227420208), we get a palindrome (988166949661889).

The spelling of 802024722241681 in words is "eight hundred two trillion, twenty-four billion, seven hundred twenty-two million, two hundred forty-one thousand, six hundred eighty-one".