22663589681 has 8 divisors (see below), whose sum is σ = 22770558720. Its totient is φ = 22556668752.

The previous prime is 22663589659. The next prime is 22663589699. The reversal of 22663589681 is 18698536622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22663589681 is a prime.

It is a super-2 number, since 2×22663589681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22663589981) 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, 1231415 + ... + 1249683.

It is an arithmetic number, because the mean of its divisors is an integer number (2846319840).

Almost surely, 2^22663589681 is an apocalyptic number.

It is an amenable number.

22663589681 is a deficient number, since it is larger than the sum of its proper divisors (106969039).

22663589681 is a wasteful number, since it uses less digits than its factorization.

22663589681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24055.

The product of its digits is 7464960, while the sum is 56.

The spelling of 22663589681 in words is "twenty-two billion, six hundred sixty-three million, five hundred eighty-nine thousand, six hundred eighty-one".