9810851622049 has 2 divisors, whose sum is σ = 9810851622050. Its totient is φ = 9810851622048.

The previous prime is 9810851621983. The next prime is 9810851622161. The reversal of 9810851622049 is 9402261580189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9760825589824 + 50026032225 = 3124232^2 + 223665^2 .

It is a cyclic number.

It is not a de Polignac number, because 9810851622049 - 2⁹ = 9810851621537 is a prime.

It is a super-2 number, since 2×9810851622049² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9810851629049) 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, 4905425811024 + 4905425811025.

It is an arithmetic number, because the mean of its divisors is an integer number (4905425811025).

Almost surely, 2^{9810851622049} is an apocalyptic number.

It is an amenable number.

9810851622049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9810851622049 is an equidigital number, since it uses as much as digits as its factorization.

9810851622049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

It can be divided in two parts, 9810851 and 622049, that added together give a square (10432900 = 3230²).

The spelling of 9810851622049 in words is "nine trillion, eight hundred ten billion, eight hundred fifty-one million, six hundred twenty-two thousand, forty-nine".