23664660063 has 24 divisors (see below), whose sum is σ = 34705058304. Its totient is φ = 14332721040.

The previous prime is 23664660001. The next prime is 23664660091. The reversal of 23664660063 is 36006646632.

It is a de Polignac number, because none of the positive numbers 2^k-23664660063 is a prime.

It is a super-2 number, since 2×23664660063² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23664659997 and 23664660024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23664660163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548020 + ... + 589622.

It is an arithmetic number, because the mean of its divisors is an integer number (1446044096).

Almost surely, 2^23664660063 is an apocalyptic number.

23664660063 is a deficient number, since it is larger than the sum of its proper divisors (11040398241).

23664660063 is a wasteful number, since it uses less digits than its factorization.

23664660063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43195 (or 43184 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 42.

The spelling of 23664660063 in words is "twenty-three billion, six hundred sixty-four million, six hundred sixty thousand, sixty-three".