23440511355005 has 4 divisors (see below), whose sum is σ = 28128613626012. Its totient is φ = 18752409084000.

The previous prime is 23440511354999. The next prime is 23440511355043. The reversal of 23440511355005 is 50055311504432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17942433694201 + 5498077660804 = 4235851^2 + 2344798^2 .

It is not a de Polignac number, because 23440511355005 - 2¹⁰ = 23440511353981 is a prime.

It is a super-2 number, since 2×23440511355005² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23440511355005.

It is a congruent number.

It is an unprimeable number.

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, 2344051135496 + ... + 2344051135505.

It is an arithmetic number, because the mean of its divisors is an integer number (7032153406503).

Almost surely, 2^{23440511355005} is an apocalyptic number.

It is an amenable number.

23440511355005 is a deficient number, since it is larger than the sum of its proper divisors (4688102271007).

23440511355005 is an equidigital number, since it uses as much as digits as its factorization.

23440511355005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688102271006.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 23440511355005 its reverse (50055311504432), we get a palindrome (73495822859437).

The spelling of 23440511355005 in words is "twenty-three trillion, four hundred forty billion, five hundred eleven million, three hundred fifty-five thousand, five".