1108684048691 has 4 divisors (see below), whose sum is σ = 1108686649800. Its totient is φ = 1108681447584.

The previous prime is 1108684048687. The next prime is 1108684048729. The reversal of 1108684048691 is 1968404868011.

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 1108684048691 - 2² = 1108684048687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1108684048651) 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, 494801 + ... + 1569138.

It is an arithmetic number, because the mean of its divisors is an integer number (277171662450).

Almost surely, 2^{1108684048691} is an apocalyptic number.

1108684048691 is a deficient number, since it is larger than the sum of its proper divisors (2601109).

1108684048691 is an equidigital number, since it uses as much as digits as its factorization.

1108684048691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601108.

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 1108684048691 in words is "one trillion, one hundred eight billion, six hundred eighty-four million, forty-eight thousand, six hundred ninety-one".