23646544063 has 4 divisors (see below), whose sum is σ = 23656949568. Its totient is φ = 23636138560.

The previous prime is 23646544027. The next prime is 23646544067. The reversal of 23646544063 is 36044564632.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23646544063 - 2⁹ = 23646543551 is a prime.

It is a super-2 number, since 2×23646544063² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23646544067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5199343 + ... + 5203888.

It is an arithmetic number, because the mean of its divisors is an integer number (5914237392).

Almost surely, 2^23646544063 is an apocalyptic number.

23646544063 is a deficient number, since it is larger than the sum of its proper divisors (10405505).

23646544063 is a wasteful number, since it uses less digits than its factorization.

23646544063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10405504.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 23646544063 in words is "twenty-three billion, six hundred forty-six million, five hundred forty-four thousand, sixty-three".