11111444459 has 4 divisors (see below), whose sum is σ = 11114662104. Its totient is φ = 11108226816.

The previous prime is 11111444441. The next prime is 11111444479. The reversal of 11111444459 is 95444411111.

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-11111444459 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 (11111444429) 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, 1603637 + ... + 1610550.

It is an arithmetic number, because the mean of its divisors is an integer number (2778665526).

Almost surely, 2^11111444459 is an apocalyptic number.

11111444459 is a deficient number, since it is larger than the sum of its proper divisors (3217645).

11111444459 is an equidigital number, since it uses as much as digits as its factorization.

11111444459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217644.

The product of its digits is 11520, while the sum is 35.

The spelling of 11111444459 in words is "eleven billion, one hundred eleven million, four hundred forty-four thousand, four hundred fifty-nine".