23642451223 has 4 divisors (see below), whose sum is σ = 23645464360. Its totient is φ = 23639438088.

The previous prime is 23642451211. The next prime is 23642451233. The reversal of 23642451223 is 32215424632.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23642451223 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 (23642451233) 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, 1494768 + ... + 1510501.

It is an arithmetic number, because the mean of its divisors is an integer number (5911366090).

Almost surely, 2^23642451223 is an apocalyptic number.

23642451223 is a deficient number, since it is larger than the sum of its proper divisors (3013137).

23642451223 is an equidigital number, since it uses as much as digits as its factorization.

23642451223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013136.

The product of its digits is 69120, while the sum is 34.

Adding to 23642451223 its reverse (32215424632), we get a palindrome (55857875855).

The spelling of 23642451223 in words is "twenty-three billion, six hundred forty-two million, four hundred fifty-one thousand, two hundred twenty-three".