5681106181 has 2 divisors, whose sum is σ = 5681106182. Its totient is φ = 5681106180.

The previous prime is 5681106173. The next prime is 5681106287. The reversal of 5681106181 is 1816011865.

5681106181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5563817281 + 117288900 = 74591^2 + 10830^2 .

It is a cyclic number.

It is not a de Polignac number, because 5681106181 - 2³ = 5681106173 is a prime.

It is a super-2 number, since 2×5681106181² = 64549934879592809522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5681106181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5681106161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840553090 + 2840553091.

It is an arithmetic number, because the mean of its divisors is an integer number (2840553091).

Almost surely, 2^5681106181 is an apocalyptic number.

It is an amenable number.

5681106181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681106181 is an equidigital number, since it uses as much as digits as its factorization.

5681106181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 5681106181 is about 75373.1131173444. The cubic root of 5681106181 is about 1784.3400993706.

The spelling of 5681106181 in words is "five billion, six hundred eighty-one million, one hundred six thousand, one hundred eighty-one".