113540112005 has 4 divisors (see below), whose sum is σ = 136248134412. Its totient is φ = 90832089600.

The previous prime is 113540112001. The next prime is 113540112017. The reversal of 113540112005 is 500211045311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500211045311 = 707191 ⋅707321.

It can be written as a sum of positive squares in 2 ways, for example, as 29737967809 + 83802144196 = 172447^2 + 289486^2 .

It is not a de Polignac number, because 113540112005 - 2² = 113540112001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113540112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11354011196 + ... + 11354011205.

It is an arithmetic number, because the mean of its divisors is an integer number (34062033603).

Almost surely, 2^113540112005 is an apocalyptic number.

It is an amenable number.

113540112005 is a deficient number, since it is larger than the sum of its proper divisors (22708022407).

113540112005 is an equidigital number, since it uses as much as digits as its factorization.

113540112005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22708022406.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 113540112005 its reverse (500211045311), we get a palindrome (613751157316).

The spelling of 113540112005 in words is "one hundred thirteen billion, five hundred forty million, one hundred twelve thousand, five".