11104863991 has 4 divisors (see below), whose sum is σ = 11959084312. Its totient is φ = 10250643672.

The previous prime is 11104863977. The next prime is 11104863997. The reversal of 11104863991 is 19936840111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19936840111 = 127 ⋅156982993.

It is a cyclic number.

It is not a de Polignac number, because 11104863991 - 2³³ = 2514929399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11104863997) 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, 427110141 + ... + 427110166.

It is an arithmetic number, because the mean of its divisors is an integer number (2989771078).

Almost surely, 2^11104863991 is an apocalyptic number.

11104863991 is a deficient number, since it is larger than the sum of its proper divisors (854220321).

11104863991 is an equidigital number, since it uses as much as digits as its factorization.

11104863991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854220320.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 11104863991 in words is "eleven billion, one hundred four million, eight hundred sixty-three thousand, nine hundred ninety-one".