22160100645 has 12 divisors (see below), whose sum is σ = 38410841196. Its totient is φ = 11818720320.

The previous prime is 22160100601. The next prime is 22160100647. The reversal of 22160100645 is 54600106122.

22160100645 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 0 + 10 + 0 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10613738529 + 11546362116 = 103023^2 + 107454^2 .

It is not a de Polignac number, because 22160100645 - 2¹⁹ = 22159576357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22160100647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246223296 + ... + 246223385.

It is an arithmetic number, because the mean of its divisors is an integer number (3200903433).

Almost surely, 2^22160100645 is an apocalyptic number.

It is an amenable number.

22160100645 is a deficient number, since it is larger than the sum of its proper divisors (16250740551).

22160100645 is a wasteful number, since it uses less digits than its factorization.

22160100645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492446692 (or 492446689 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 22160100645 its reverse (54600106122), we get a palindrome (76760206767).

The spelling of 22160100645 in words is "twenty-two billion, one hundred sixty million, one hundred thousand, six hundred forty-five".