105005255445 has 32 divisors (see below), whose sum is σ = 188145930240. Its totient is φ = 55561826880.

The previous prime is 105005255413. The next prime is 105005255497. The reversal of 105005255445 is 544552500501.

105005255445 is a `hidden beast` number, since 1 + 0 + 50 + 0 + 52 + 554 + 4 + 5 = 666.

It is not a de Polignac number, because 105005255445 - 2⁵ = 105005255413 is a prime.

It is a super-2 number, since 2×105005255445² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3045126 + ... + 3079415.

It is an arithmetic number, because the mean of its divisors is an integer number (5879560320).

Almost surely, 2^105005255445 is an apocalyptic number.

105005255445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105005255445 is a deficient number, since it is larger than the sum of its proper divisors (83140674795).

105005255445 is a wasteful number, since it uses less digits than its factorization.

105005255445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6124682 (or 6124676 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

Adding to 105005255445 its reverse (544552500501), we get a palindrome (649557755946).

The spelling of 105005255445 in words is "one hundred five billion, five million, two hundred fifty-five thousand, four hundred forty-five".