11147385889 has 4 divisors (see below), whose sum is σ = 11196064660. Its totient is φ = 11098707120.

The previous prime is 11147385871. The next prime is 11147385947. The reversal of 11147385889 is 98858374111.

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 9571295889 + 1576090000 = 97833^2 + 39700^2 .

It is a cyclic number.

It is not a de Polignac number, because 11147385889 - 2⁷ = 11147385761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11147385089) 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, 24339042 + ... + 24339499.

It is an arithmetic number, because the mean of its divisors is an integer number (2799016165).

Almost surely, 2^11147385889 is an apocalyptic number.

It is an amenable number.

11147385889 is a deficient number, since it is larger than the sum of its proper divisors (48678771).

11147385889 is an equidigital number, since it uses as much as digits as its factorization.

11147385889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48678770.

The product of its digits is 1935360, while the sum is 55.

The spelling of 11147385889 in words is "eleven billion, one hundred forty-seven million, three hundred eighty-five thousand, eight hundred eighty-nine".