11555116847 has 4 divisors (see below), whose sum is σ = 11555338656. Its totient is φ = 11554895040.

The previous prime is 11555116813. The next prime is 11555116849. The reversal of 11555116847 is 74861155511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74861155511 = 17 ⋅4403597383.

It is a cyclic number.

It is not a de Polignac number, because 11555116847 - 2²⁰ = 11554068271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11555116798 and 11555116807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555116849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14522 + ... + 152712.

It is an arithmetic number, because the mean of its divisors is an integer number (2888834664).

Almost surely, 2^11555116847 is an apocalyptic number.

11555116847 is a deficient number, since it is larger than the sum of its proper divisors (221809).

11555116847 is an equidigital number, since it uses as much as digits as its factorization.

11555116847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221808.

The product of its digits is 168000, while the sum is 44.

The spelling of 11555116847 in words is "eleven billion, five hundred fifty-five million, one hundred sixteen thousand, eight hundred forty-seven".