105210868085281 has 6 divisors (see below), whose sum is σ = 122388152670690. Its totient is φ = 90180744073056.

The previous prime is 105210868085261. The next prime is 105210868085317. The reversal of 105210868085281 is 182580868012501.

It can be written as a sum of positive squares in only one way, i.e., 81843070384656 + 23367797700625 = 9046716^2 + 4834025^2 .

It is not a de Polignac number, because 105210868085281 - 2¹³ = 105210868077089 is a prime.

It is a super-2 number, since 2×105210868085281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105210868085261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1073580286536 + ... + 1073580286633.

It is an arithmetic number, because the mean of its divisors is an integer number (20398025445115).

Almost surely, 2^{105210868085281} is an apocalyptic number.

It is an amenable number.

105210868085281 is a deficient number, since it is larger than the sum of its proper divisors (17177284585409).

105210868085281 is an equidigital number, since it uses as much as digits as its factorization.

105210868085281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147160573183 (or 2147160573176 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 55.

The spelling of 105210868085281 in words is "one hundred five trillion, two hundred ten billion, eight hundred sixty-eight million, eighty-five thousand, two hundred eighty-one".