109223745649 has 2 divisors, whose sum is σ = 109223745650. Its totient is φ = 109223745648.

The previous prime is 109223745647. The next prime is 109223745671. The reversal of 109223745649 is 946547322901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109143015424 + 80730225 = 330368^2 + 8985^2 .

It is an emirp because it is prime and its reverse (946547322901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109223745649 - 2¹ = 109223745647 is a prime.

It is a super-2 number, since 2×109223745649² (a number of 23 digits) contains 22 as substring.

Together with 109223745647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 109223745596 and 109223745605.

It is not a weakly prime, because it can be changed into another prime (109223745647) 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 as a sum of consecutive naturals, namely, 54611872824 + 54611872825.

It is an arithmetic number, because the mean of its divisors is an integer number (54611872825).

Almost surely, 2^109223745649 is an apocalyptic number.

It is an amenable number.

109223745649 is a deficient number, since it is larger than the sum of its proper divisors (1).

109223745649 is an equidigital number, since it uses as much as digits as its factorization.

109223745649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 109223745649 in words is "one hundred nine billion, two hundred twenty-three million, seven hundred forty-five thousand, six hundred forty-nine".