4170209324549 has 2 divisors, whose sum is σ = 4170209324550. Its totient is φ = 4170209324548.

The previous prime is 4170209324513. The next prime is 4170209324641. The reversal of 4170209324549 is 9454239020714.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2385767535649 + 1784441788900 = 1544593^2 + 1335830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4170209324549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4170209324497 and 4170209324506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4170209324249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2085104662274 + 2085104662275.

It is an arithmetic number, because the mean of its divisors is an integer number (2085104662275).

Almost surely, 2^{4170209324549} is an apocalyptic number.

It is an amenable number.

4170209324549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4170209324549 is an equidigital number, since it uses as much as digits as its factorization.

4170209324549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 4170209324549 in words is "four trillion, one hundred seventy billion, two hundred nine million, three hundred twenty-four thousand, five hundred forty-nine".