5671346968681 has 9 divisors (see below), whose sum is σ = 5682425654199. Its totient is φ = 5660289854544.

The previous prime is 5671346968597. The next prime is 5671346968691. The reversal of 5671346968681 is 1868696431765.

The square root of 5671346968681 is 2381459.

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., 2907826405225 + 2763520563456 = 1705235^2 + 1662384^2 .

It is not a de Polignac number, because 5671346968681 - 2³³ = 5662757034089 is a prime.

It is a super-2 number, since 2×5671346968681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5671346968681.

It is not an unprimeable number, because it can be changed into a prime (5671346968691) 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, 1397914405 + ... + 1397918461.

Almost surely, 2^{5671346968681} is an apocalyptic number.

5671346968681 is the 2381459-th square number.

5671346968681 is the 1190730-th centered octagonal number.

It is an amenable number.

5671346968681 is a deficient number, since it is larger than the sum of its proper divisors (11078685518).

5671346968681 is an frugal number, since it uses more digits than its factorization.

5671346968681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9288 (or 4644 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 70.

The spelling of 5671346968681 in words is "five trillion, six hundred seventy-one billion, three hundred forty-six million, nine hundred sixty-eight thousand, six hundred eighty-one".