104185105281 has 32 divisors (see below), whose sum is σ = 154833715200. Its totient is φ = 69238625040.

The previous prime is 104185105247. The next prime is 104185105303. The reversal of 104185105281 is 182501581401.

104185105281 is a `hidden beast` number, since 1 + 0 + 4 + 18 + 510 + 52 + 81 = 666.

It is not a de Polignac number, because 104185105281 - 2¹⁵ = 104185072513 is a prime.

It is a super-2 number, since 2×104185105281² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104185105231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14054466 + ... + 14061876.

It is an arithmetic number, because the mean of its divisors is an integer number (4838553600).

Almost surely, 2^104185105281 is an apocalyptic number.

It is an amenable number.

104185105281 is a deficient number, since it is larger than the sum of its proper divisors (50648609919).

104185105281 is a wasteful number, since it uses less digits than its factorization.

104185105281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8986 (or 8980 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

Adding to 104185105281 its reverse (182501581401), we get a palindrome (286686686682).

The spelling of 104185105281 in words is "one hundred four billion, one hundred eighty-five million, one hundred five thousand, two hundred eighty-one".