11123345556679 has 4 divisors (see below), whose sum is σ = 11130216062040. Its totient is φ = 11116475051320.

The previous prime is 11123345556601. The next prime is 11123345556737. The reversal of 11123345556679 is 97665554332111.

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

It is a cyclic number.

It is not a de Polignac number, because 11123345556679 - 2²⁹ = 11122808685767 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 (11123345551679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3435250252 + ... + 3435253489.

It is an arithmetic number, because the mean of its divisors is an integer number (2782554015510).

Almost surely, 2^{11123345556679} is an apocalyptic number.

11123345556679 is a deficient number, since it is larger than the sum of its proper divisors (6870505361).

11123345556679 is an equidigital number, since it uses as much as digits as its factorization.

11123345556679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870505360.

The product of its digits is 20412000, while the sum is 58.

The spelling of 11123345556679 in words is "eleven trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred fifty-six thousand, six hundred seventy-nine".