23644211441 has 4 divisors (see below), whose sum is σ = 24090328692. Its totient is φ = 23198094192.

The previous prime is 23644211413. The next prime is 23644211443. The reversal of 23644211441 is 14411244632.

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 12126414400 + 11517797041 = 110120^2 + 107321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23644211441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23644211398 and 23644211407.

It is not an unprimeable number, because it can be changed into a prime (23644211443) 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, 223058546 + ... + 223058651.

It is an arithmetic number, because the mean of its divisors is an integer number (6022582173).

Almost surely, 2^23644211441 is an apocalyptic number.

It is an amenable number.

23644211441 is a deficient number, since it is larger than the sum of its proper divisors (446117251).

23644211441 is an equidigital number, since it uses as much as digits as its factorization.

23644211441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446117250.

The product of its digits is 18432, while the sum is 32.

The spelling of 23644211441 in words is "twenty-three billion, six hundred forty-four million, two hundred eleven thousand, four hundred forty-one".