23356638229 has 4 divisors (see below), whose sum is σ = 23439758220. Its totient is φ = 23273518240.

The previous prime is 23356638197. The next prime is 23356638259. The reversal of 23356638229 is 92283665332.

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 15593266129 + 7763372100 = 124873^2 + 88110^2 .

It is a cyclic number.

It is not a de Polignac number, because 23356638229 - 2⁵ = 23356638197 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23356638259) 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, 41559574 + ... + 41560135.

It is an arithmetic number, because the mean of its divisors is an integer number (5859939555).

Almost surely, 2^23356638229 is an apocalyptic number.

It is an amenable number.

23356638229 is a deficient number, since it is larger than the sum of its proper divisors (83119991).

23356638229 is an equidigital number, since it uses as much as digits as its factorization.

23356638229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83119990.

The product of its digits is 2799360, while the sum is 49.

The spelling of 23356638229 in words is "twenty-three billion, three hundred fifty-six million, six hundred thirty-eight thousand, two hundred twenty-nine".