11124456789 has 4 divisors (see below), whose sum is σ = 14832609056. Its totient is φ = 7416304524.

The previous prime is 11124456781. The next prime is 11124456803. The reversal of 11124456789 is 98765442111.

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.

It is not a de Polignac number, because 11124456789 - 2³ = 11124456781 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11124456781) 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, 1854076129 + ... + 1854076134.

It is an arithmetic number, because the mean of its divisors is an integer number (3708152264).

Almost surely, 2^11124456789 is an apocalyptic number.

It is an amenable number.

11124456789 is a deficient number, since it is larger than the sum of its proper divisors (3708152267).

11124456789 is an equidigital number, since it uses as much as digits as its factorization.

11124456789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708152266.

The product of its digits is 483840, while the sum is 48.

The spelling of 11124456789 in words is "eleven billion, one hundred twenty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".