4243226657149 has 2 divisors, whose sum is σ = 4243226657150. Its totient is φ = 4243226657148.

The previous prime is 4243226657107. The next prime is 4243226657191. The reversal of 4243226657149 is 9417566223424.

It is a balanced prime because it is at equal distance from previous prime (4243226657107) and next prime (4243226657191).

It can be written as a sum of positive squares in only one way, i.e., 3253514062500 + 989712594649 = 1803750^2 + 994843^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243226657149 - 2⁹ = 4243226656637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4243226657149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243226657749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121613328574 + 2121613328575.

It is an arithmetic number, because the mean of its divisors is an integer number (2121613328575).

Almost surely, 2^{4243226657149} is an apocalyptic number.

It is an amenable number.

4243226657149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243226657149 is an equidigital number, since it uses as much as digits as its factorization.

4243226657149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 55.

The spelling of 4243226657149 in words is "four trillion, two hundred forty-three billion, two hundred twenty-six million, six hundred fifty-seven thousand, one hundred forty-nine".