11281559847 has 4 divisors (see below), whose sum is σ = 15042079800. Its totient is φ = 7521039896.

The previous prime is 11281559813. The next prime is 11281559857. The reversal of 11281559847 is 74895518211.

It is a happy number.

11281559847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74895518211 = 3 ⋅24965172737.

It is a cyclic number.

It is not a de Polignac number, because 11281559847 - 2²⁸ = 11013124391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11281559847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281559857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880259972 + ... + 1880259977.

It is an arithmetic number, because the mean of its divisors is an integer number (3760519950).

Almost surely, 2^11281559847 is an apocalyptic number.

11281559847 is a deficient number, since it is larger than the sum of its proper divisors (3760519953).

11281559847 is an equidigital number, since it uses as much as digits as its factorization.

11281559847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760519952.

The product of its digits is 806400, while the sum is 51.

The spelling of 11281559847 in words is "eleven billion, two hundred eighty-one million, five hundred fifty-nine thousand, eight hundred forty-seven".