23440554013 has 4 divisors (see below), whose sum is σ = 23443316028. Its totient is φ = 23437792000.

The previous prime is 23440554001. The next prime is 23440554041. The reversal of 23440554013 is 31045504432.

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 12652200324 + 10788353689 = 112482^2 + 103867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23440554013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440554073) 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, 1368238 + ... + 1385263.

It is an arithmetic number, because the mean of its divisors is an integer number (5860829007).

Almost surely, 2^23440554013 is an apocalyptic number.

It is an amenable number.

23440554013 is a deficient number, since it is larger than the sum of its proper divisors (2762015).

23440554013 is an equidigital number, since it uses as much as digits as its factorization.

23440554013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762014.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 23440554013 in words is "twenty-three billion, four hundred forty million, five hundred fifty-four thousand, thirteen".