23564322563 has 8 divisors (see below), whose sum is σ = 24390040080. Its totient is φ = 22739482080.

The previous prime is 23564322553. The next prime is 23564322577. The reversal of 23564322563 is 36522346532.

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 23564322563 - 2⁶ = 23564322499 is a prime.

It is a super-2 number, since 2×23564322563² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23564322563.

It is not an unprimeable number, because it can be changed into a prime (23564322553) 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, 164345 + ... + 272282.

It is an arithmetic number, because the mean of its divisors is an integer number (3048755010).

Almost surely, 2^23564322563 is an apocalyptic number.

23564322563 is a deficient number, since it is larger than the sum of its proper divisors (825717517).

23564322563 is a wasteful number, since it uses less digits than its factorization.

23564322563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438517.

The product of its digits is 777600, while the sum is 41.

The spelling of 23564322563 in words is "twenty-three billion, five hundred sixty-four million, three hundred twenty-two thousand, five hundred sixty-three".