11447013689 has 4 divisors (see below), whose sum is σ = 11453127156. Its totient is φ = 11440900224.

The previous prime is 11447013673. The next prime is 11447013709. The reversal of 11447013689 is 98631074411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 481363600 + 10965650089 = 21940^2 + 104717^2 .

It is a cyclic number.

It is not a de Polignac number, because 11447013689 - 2⁴ = 11447013673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11447013629) 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, 3053924 + ... + 3057669.

It is an arithmetic number, because the mean of its divisors is an integer number (2863281789).

Almost surely, 2^11447013689 is an apocalyptic number.

It is an amenable number.

11447013689 is a deficient number, since it is larger than the sum of its proper divisors (6113467).

11447013689 is an equidigital number, since it uses as much as digits as its factorization.

11447013689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113466.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 11447013689 in words is "eleven billion, four hundred forty-seven million, thirteen thousand, six hundred eighty-nine".