9728144418227 has 2 divisors, whose sum is σ = 9728144418228. Its totient is φ = 9728144418226.

The previous prime is 9728144418217. The next prime is 9728144418301. The reversal of 9728144418227 is 7228144418279.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9728144418227 is a prime.

It is a super-2 number, since 2×9728144418227² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9728144418217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864072209113 + 4864072209114.

It is an arithmetic number, because the mean of its divisors is an integer number (4864072209114).

Almost surely, 2^{9728144418227} is an apocalyptic number.

9728144418227 is a deficient number, since it is larger than the sum of its proper divisors (1).

9728144418227 is an equidigital number, since it uses as much as digits as its factorization.

9728144418227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14450688, while the sum is 59.

The spelling of 9728144418227 in words is "nine trillion, seven hundred twenty-eight billion, one hundred forty-four million, four hundred eighteen thousand, two hundred twenty-seven".