12104105445 has 24 divisors (see below), whose sum is σ = 21547491576. Its totient is φ = 6281048448.

The previous prime is 12104105407. The next prime is 12104105449. The reversal of 12104105445 is 54450140121.

12104105445 is a `hidden beast` number, since 1 + 2 + 104 + 10 + 544 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2745864801 + 9358240644 = 52401^2 + 96738^2 .

It is not a de Polignac number, because 12104105445 - 2⁹ = 12104104933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104105449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3633202 + ... + 3636531.

It is an arithmetic number, because the mean of its divisors is an integer number (897812149).

Almost surely, 2^12104105445 is an apocalyptic number.

12104105445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12104105445 is a deficient number, since it is larger than the sum of its proper divisors (9443386131).

12104105445 is a wasteful number, since it uses less digits than its factorization.

12104105445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269781 (or 7269778 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 12104105445 its reverse (54450140121), we get a palindrome (66554245566).

The spelling of 12104105445 in words is "twelve billion, one hundred four million, one hundred five thousand, four hundred forty-five".