105185482681 has 4 divisors (see below), whose sum is σ = 105189136164. Its totient is φ = 105181829200.

The previous prime is 105185482667. The next prime is 105185482691. The reversal of 105185482681 is 186284581501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186284581501 = 148957 ⋅1250593.

It can be written as a sum of positive squares in 2 ways, for example, as 78806525625 + 26378957056 = 280725^2 + 162416^2 .

It is a cyclic number.

It is not a de Polignac number, because 105185482681 - 2⁹ = 105185482169 is a prime.

It is a super-2 number, since 2×105185482681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105185482621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783210 + ... + 1841251.

It is an arithmetic number, because the mean of its divisors is an integer number (26297284041).

Almost surely, 2^105185482681 is an apocalyptic number.

It is an amenable number.

105185482681 is a deficient number, since it is larger than the sum of its proper divisors (3653483).

105185482681 is an equidigital number, since it uses as much as digits as its factorization.

105185482681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653482.

The product of its (nonzero) digits is 614400, while the sum is 49.

The spelling of 105185482681 in words is "one hundred five billion, one hundred eighty-five million, four hundred eighty-two thousand, six hundred eighty-one".