2811688422481 has 27 divisors (see below), whose sum is σ = 2959526985051. Its totient is φ = 2671116493584.

The previous prime is 2811688422451. The next prime is 2811688422503. The reversal of 2811688422481 is 1842248861182.

The square root of 2811688422481 is 1676809.

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

2811688422481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1474381206081 + 1337307216400 = 1214241^2 + 1156420^2 .

It is not a de Polignac number, because 2811688422481 - 2¹⁹ = 2811687898193 is a prime.

It is a super-2 number, since 2×2811688422481² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2811688422451) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3258039456 + ... + 3258040318.

Almost surely, 2^{2811688422481} is an apocalyptic number.

2811688422481 is the 1676809-th square number.

2811688422481 is the 838405-th centered octagonal number.

It is an amenable number.

2811688422481 is a deficient number, since it is larger than the sum of its proper divisors (147838562570).

2811688422481 is an frugal number, since it uses more digits than its factorization.

2811688422481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 959 counting only the distinct ones).

The product of its digits is 3145728, while the sum is 55.

The spelling of 2811688422481 in words is "two trillion, eight hundred eleven billion, six hundred eighty-eight million, four hundred twenty-two thousand, four hundred eighty-one".