11216618423 has 4 divisors (see below), whose sum is σ = 11351758488. Its totient is φ = 11081478360.

The previous prime is 11216618407. The next prime is 11216618437. The reversal of 11216618423 is 32481661211.

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 11216618423 - 2⁴ = 11216618407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216618123) 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, 67569908 + ... + 67570073.

It is an arithmetic number, because the mean of its divisors is an integer number (2837939622).

Almost surely, 2^11216618423 is an apocalyptic number.

11216618423 is a deficient number, since it is larger than the sum of its proper divisors (135140065).

11216618423 is an equidigital number, since it uses as much as digits as its factorization.

11216618423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135140064.

The product of its digits is 13824, while the sum is 35.

The spelling of 11216618423 in words is "eleven billion, two hundred sixteen million, six hundred eighteen thousand, four hundred twenty-three".