7043157281 has 2 divisors, whose sum is σ = 7043157282. Its totient is φ = 7043157280.

The previous prime is 7043157271. The next prime is 7043157283. The reversal of 7043157281 is 1827513407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5744275681 + 1298881600 = 75791^2 + 36040^2 .

It is a cyclic number.

It is not a de Polignac number, because 7043157281 - 2³⁰ = 5969415457 is a prime.

It is a super-2 number, since 2×7043157281² = 99212128969806625922, which contains 22 as substring.

Together with 7043157283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7043157283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3521578640 + 3521578641.

It is an arithmetic number, because the mean of its divisors is an integer number (3521578641).

Almost surely, 2^7043157281 is an apocalyptic number.

It is an amenable number.

7043157281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7043157281 is an equidigital number, since it uses as much as digits as its factorization.

7043157281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7043157281 is about 83923.5204278276. The cubic root of 7043157281 is about 1916.8544124831.

The spelling of 7043157281 in words is "seven billion, forty-three million, one hundred fifty-seven thousand, two hundred eighty-one".