11223489643 has 4 divisors (see below), whose sum is σ = 11585537728. Its totient is φ = 10861441560.

The previous prime is 11223489637. The next prime is 11223489647. The reversal of 11223489643 is 34698432211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223489643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11223489643.

It is not an unprimeable number, because it can be changed into a prime (11223489647) 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, 181023996 + ... + 181024057.

It is an arithmetic number, because the mean of its divisors is an integer number (2896384432).

Almost surely, 2^11223489643 is an apocalyptic number.

11223489643 is a deficient number, since it is larger than the sum of its proper divisors (362048085).

11223489643 is an equidigital number, since it uses as much as digits as its factorization.

11223489643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362048084.

The product of its digits is 248832, while the sum is 43.

The spelling of 11223489643 in words is "eleven billion, two hundred twenty-three million, four hundred eighty-nine thousand, six hundred forty-three".