22681263609 has 27 divisors (see below), whose sum is σ = 34814143533. Its totient is φ = 14226561792.

The previous prime is 22681263589. The next prime is 22681263697. The reversal of 22681263609 is 90636218622.

The square root of 22681263609 is 150603.

It is a perfect power (a square), and thus also a powerful number.

22681263609 is a `hidden beast` number, since 2 + 2 + 6 + 8 + 1 + 2 + 636 + 0 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7991823609 + 14689440000 = 89397^2 + 121200^2 .

It is not a de Polignac number, because 22681263609 - 2⁹ = 22681263097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22681213609) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7679277 + ... + 7682229.

Almost surely, 2^22681263609 is an apocalyptic number.

22681263609 is the 150603-rd square number.

22681263609 is the 75302-nd centered octagonal number.

It is an amenable number.

22681263609 is a deficient number, since it is larger than the sum of its proper divisors (12132879924).

22681263609 is an frugal number, since it uses more digits than its factorization.

22681263609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 22681263609 in words is "twenty-two billion, six hundred eighty-one million, two hundred sixty-three thousand, six hundred nine".