23643354211 has 4 divisors (see below), whose sum is σ = 23647349232. Its totient is φ = 23639359192.

The previous prime is 23643354209. The next prime is 23643354227. The reversal of 23643354211 is 11245334632.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23643354211 - 2¹ = 23643354209 is a prime.

It is a super-2 number, since 2×23643354211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23643354271) 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, 1988620 + ... + 2000473.

It is an arithmetic number, because the mean of its divisors is an integer number (5911837308).

Almost surely, 2^23643354211 is an apocalyptic number.

23643354211 is a deficient number, since it is larger than the sum of its proper divisors (3995021).

23643354211 is an equidigital number, since it uses as much as digits as its factorization.

23643354211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995020.

The product of its digits is 51840, while the sum is 34.

Adding to 23643354211 its reverse (11245334632), we get a palindrome (34888688843).

The spelling of 23643354211 in words is "twenty-three billion, six hundred forty-three million, three hundred fifty-four thousand, two hundred eleven".