22609635309 has 6 divisors (see below), whose sum is σ = 32658362126. Its totient is φ = 15073090200.

The previous prime is 22609635287. The next prime is 22609635311. The reversal of 22609635309 is 90353690622.

22609635309 is a `hidden beast` number, since 2 + 2 + 6 + 0 + 9 + 635 + 3 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22226337225 + 383298084 = 149085^2 + 19578^2 .

It is not a de Polignac number, because 22609635309 - 2²⁷ = 22475417581 is a prime.

It is a super-2 number, since 2×22609635309² (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 (22609635319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256090842 + ... + 1256090859.

Almost surely, 2^22609635309 is an apocalyptic number.

It is an amenable number.

22609635309 is a deficient number, since it is larger than the sum of its proper divisors (10048726817).

22609635309 is a wasteful number, since it uses less digits than its factorization.

22609635309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512181707 (or 2512181704 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 22609635309 in words is "twenty-two billion, six hundred nine million, six hundred thirty-five thousand, three hundred nine".