11344557789 has 24 divisors (see below), whose sum is σ = 17732350272. Its totient is φ = 7234207200.

The previous prime is 11344557761. The next prime is 11344557811. The reversal of 11344557789 is 98775544311.

11344557789 is a `hidden beast` number, since 1 + 1 + 3 + 4 + 4 + 557 + 7 + 89 = 666.

It is not a de Polignac number, because 11344557789 - 2⁹ = 11344557277 is a prime.

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 (11344557739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1009312 + ... + 1020489.

It is an arithmetic number, because the mean of its divisors is an integer number (738847928).

Almost surely, 2^11344557789 is an apocalyptic number.

It is an amenable number.

11344557789 is a deficient number, since it is larger than the sum of its proper divisors (6387792483).

11344557789 is an equidigital number, since it uses as much as digits as its factorization.

11344557789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029839 (or 2029827 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 11344557789 in words is "eleven billion, three hundred forty-four million, five hundred fifty-seven thousand, seven hundred eighty-nine".