23533000405 has 8 divisors (see below), whose sum is σ = 28312198200. Its totient is φ = 18778001856.

The previous prime is 23533000357. The next prime is 23533000409. The reversal of 23533000405 is 50400033532.

23533000405 = 108473² + 108474².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3005561329 + 20527439076 = 54823^2 + 143274^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23533000405 - 2²⁵ = 23499445973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23533000405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23533000409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6047670 + ... + 6051559.

It is an arithmetic number, because the mean of its divisors is an integer number (3539024775).

Almost surely, 2^23533000405 is an apocalyptic number.

23533000405 is the 108474-th centered square number.

It is an amenable number.

23533000405 is a deficient number, since it is larger than the sum of its proper divisors (4779197795).

23533000405 is a wasteful number, since it uses less digits than its factorization.

23533000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099623.

The product of its (nonzero) digits is 5400, while the sum is 25.

Adding to 23533000405 its reverse (50400033532), we get a palindrome (73933033937).

The spelling of 23533000405 in words is "twenty-three billion, five hundred thirty-three million, four hundred five", and thus it is an aban number.