23568544453 has 4 divisors (see below), whose sum is σ = 23704778988. Its totient is φ = 23432309920.

The previous prime is 23568544403. The next prime is 23568544459. The reversal of 23568544453 is 35444586532.

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 19434311649 + 4134232804 = 139407^2 + 64298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23568544453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23568544397 and 23568544406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23568544459) 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, 68117008 + ... + 68117353.

It is an arithmetic number, because the mean of its divisors is an integer number (5926194747).

Almost surely, 2^23568544453 is an apocalyptic number.

It is an amenable number.

23568544453 is a deficient number, since it is larger than the sum of its proper divisors (136234535).

23568544453 is a wasteful number, since it uses less digits than its factorization.

23568544453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136234534.

The product of its digits is 6912000, while the sum is 49.

The spelling of 23568544453 in words is "twenty-three billion, five hundred sixty-eight million, five hundred forty-four thousand, four hundred fifty-three".