841272349681 has 3 divisors (see below), whose sum is σ = 841273266891. Its totient is φ = 841271432472.

The previous prime is 841272349667. The next prime is 841272349693. The reversal of 841272349681 is 186943272148.

The square root of 841272349681 is 917209.

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., 822360599281 + 18911750400 = 906841^2 + 137520^2 .

It is not a de Polignac number, because 841272349681 - 2²⁹ = 840735478769 is a prime.

It is a super-2 number, since 2×841272349681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (841272349381) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 458605 + ... + 1375813.

It is an arithmetic number, because the mean of its divisors is an integer number (280424422297).

Almost surely, 2^841272349681 is an apocalyptic number.

841272349681 is the 917209-th square number.

841272349681 is the 458605-th centered octagonal number.

It is an amenable number.

841272349681 is a deficient number, since it is larger than the sum of its proper divisors (917210).

841272349681 is an frugal number, since it uses more digits than its factorization.

841272349681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834418 (or 917209 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 55.

The spelling of 841272349681 in words is "eight hundred forty-one billion, two hundred seventy-two million, three hundred forty-nine thousand, six hundred eighty-one".