11234455567889 has 4 divisors (see below), whose sum is σ = 11234465117424. Its totient is φ = 11234446018356.

The previous prime is 11234455567877. The next prime is 11234455567897. The reversal of 11234455567889 is 98876555443211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11234455567889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11234455567289) 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, 2713487 + ... + 5461860.

It is an arithmetic number, because the mean of its divisors is an integer number (2808616279356).

Almost surely, 2^{11234455567889} is an apocalyptic number.

It is an amenable number.

11234455567889 is a deficient number, since it is larger than the sum of its proper divisors (9549535).

11234455567889 is an equidigital number, since it uses as much as digits as its factorization.

11234455567889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549534.

The product of its digits is 290304000, while the sum is 68.

The spelling of 11234455567889 in words is "eleven trillion, two hundred thirty-four billion, four hundred fifty-five million, five hundred sixty-seven thousand, eight hundred eighty-nine".