22646627645 has 4 divisors (see below), whose sum is σ = 27175953180. Its totient is φ = 18117302112.

The previous prime is 22646627599. The next prime is 22646627671. The reversal of 22646627645 is 54672664622.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12829186756 + 9817440889 = 113266^2 + 99083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22646627645 - 2⁶ = 22646627581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22646627593 and 22646627602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264662760 + ... + 2264662769.

It is an arithmetic number, because the mean of its divisors is an integer number (6793988295).

Almost surely, 2^22646627645 is an apocalyptic number.

It is an amenable number.

22646627645 is a deficient number, since it is larger than the sum of its proper divisors (4529325535).

22646627645 is an equidigital number, since it uses as much as digits as its factorization.

22646627645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529325534.

The product of its digits is 5806080, while the sum is 50.

The spelling of 22646627645 in words is "twenty-two billion, six hundred forty-six million, six hundred twenty-seven thousand, six hundred forty-five".