1108909104647 has 4 divisors (see below), whose sum is σ = 1134697688520. Its totient is φ = 1083120520776.

The previous prime is 1108909104643. The next prime is 1108909104749. The reversal of 1108909104647 is 7464019098011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1108909104647 - 2² = 1108909104643 is a prime.

It is a super-2 number, since 2×1108909104647² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1108909104595 and 1108909104604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108909104643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12894291872 + ... + 12894291957.

It is an arithmetic number, because the mean of its divisors is an integer number (283674422130).

Almost surely, 2^{1108909104647} is an apocalyptic number.

1108909104647 is a deficient number, since it is larger than the sum of its proper divisors (25788583873).

1108909104647 is an equidigital number, since it uses as much as digits as its factorization.

1108909104647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25788583872.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 1108909104647 in words is "one trillion, one hundred eight billion, nine hundred nine million, one hundred four thousand, six hundred forty-seven".