11405113423 has 16 divisors (see below), whose sum is σ = 12528335232. Its totient is φ = 10296396000.

The previous prime is 11405113409. The next prime is 11405113427. The reversal of 11405113423 is 32431150411.

It is not a de Polignac number, because 11405113423 - 2⁹ = 11405112911 is a prime.

It is a super-2 number, since 2×11405113423² (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 (11405113427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3837328 + ... + 3840298.

It is an arithmetic number, because the mean of its divisors is an integer number (783020952).

Almost surely, 2^11405113423 is an apocalyptic number.

11405113423 is a deficient number, since it is larger than the sum of its proper divisors (1123221809).

11405113423 is a wasteful number, since it uses less digits than its factorization.

11405113423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 11405113423 its reverse (32431150411), we get a palindrome (43836263834).

The spelling of 11405113423 in words is "eleven billion, four hundred five million, one hundred thirteen thousand, four hundred twenty-three".