8423363561 has 4 divisors (see below), whose sum is σ = 8458608000. Its totient is φ = 8388119124.

The previous prime is 8423363491. The next prime is 8423363573. The reversal of 8423363561 is 1653633248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8423363561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8423363591) 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, 17621861 + ... + 17622338.

It is an arithmetic number, because the mean of its divisors is an integer number (2114652000).

Almost surely, 2^8423363561 is an apocalyptic number.

It is an amenable number.

8423363561 is a deficient number, since it is larger than the sum of its proper divisors (35244439).

8423363561 is a wasteful number, since it uses less digits than its factorization.

8423363561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35244438.

The product of its digits is 311040, while the sum is 41.

The square root of 8423363561 is about 91778.8840692673. The cubic root of 8423363561 is about 2034.6756228461.

The spelling of 8423363561 in words is "eight billion, four hundred twenty-three million, three hundred sixty-three thousand, five hundred sixty-one".