22845242081 has 4 divisors (see below), whose sum is σ = 22845666564. Its totient is φ = 22844817600.

The previous prime is 22845242047. The next prime is 22845242099. The reversal of 22845242081 is 18024254822.

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 2486518225 + 20358723856 = 49865^2 + 142684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22845242081 is a prime.

It is a super-2 number, since 2×22845242081² (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 (22845242011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117380 + ... + 243861.

It is an arithmetic number, because the mean of its divisors is an integer number (5711416641).

Almost surely, 2^22845242081 is an apocalyptic number.

It is an amenable number.

22845242081 is a deficient number, since it is larger than the sum of its proper divisors (424483).

22845242081 is an equidigital number, since it uses as much as digits as its factorization.

22845242081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424482.

The product of its (nonzero) digits is 81920, while the sum is 38.

The spelling of 22845242081 in words is "twenty-two billion, eight hundred forty-five million, two hundred forty-two thousand, eighty-one".