11423420044321 has 4 divisors (see below), whose sum is σ = 11702040045444. Its totient is φ = 11144800043200.

The previous prime is 11423420044313. The next prime is 11423420044339. The reversal of 11423420044321 is 12344002432411.

It is a happy number.

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 465996004321 + 10957424040000 = 682639^2 + 3310200^2 .

It is a cyclic number.

It is not a de Polignac number, because 11423420044321 - 2³ = 11423420044313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423420044381) 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, 139310000500 + ... + 139310000581.

It is an arithmetic number, because the mean of its divisors is an integer number (2925510011361).

Almost surely, 2^{11423420044321} is an apocalyptic number.

It is an amenable number.

11423420044321 is a deficient number, since it is larger than the sum of its proper divisors (278620001123).

11423420044321 is an equidigital number, since it uses as much as digits as its factorization.

11423420044321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278620001122.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 11423420044321 its reverse (12344002432411), we get a palindrome (23767422476732).

The spelling of 11423420044321 in words is "eleven trillion, four hundred twenty-three billion, four hundred twenty million, forty-four thousand, three hundred twenty-one".