11442163823 has 4 divisors (see below), whose sum is σ = 11444636040. Its totient is φ = 11439691608.

The previous prime is 11442163787. The next prime is 11442163841. The reversal of 11442163823 is 32836124411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32836124411 = 443 ⋅74122177.

It is a cyclic number.

It is not a de Polignac number, because 11442163823 - 2¹⁰ = 11442162799 is a prime.

It is a super-2 number, since 2×11442163823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11442163723) 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, 1229153 + ... + 1238426.

It is an arithmetic number, because the mean of its divisors is an integer number (2861159010).

Almost surely, 2^11442163823 is an apocalyptic number.

11442163823 is a deficient number, since it is larger than the sum of its proper divisors (2472217).

11442163823 is an equidigital number, since it uses as much as digits as its factorization.

11442163823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472216.

The product of its digits is 27648, while the sum is 35.

The spelling of 11442163823 in words is "eleven billion, four hundred forty-two million, one hundred sixty-three thousand, eight hundred twenty-three".