8157083055749 has 2 divisors, whose sum is σ = 8157083055750. Its totient is φ = 8157083055748.

The previous prime is 8157083055689. The next prime is 8157083055871. The reversal of 8157083055749 is 9475503807518.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7001580602500 + 1155502453249 = 2646050^2 + 1074943^2 .

It is a cyclic number.

It is not a de Polignac number, because 8157083055749 - 2¹² = 8157083051653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8157083055691 and 8157083055700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8157083855749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4078541527874 + 4078541527875.

It is an arithmetic number, because the mean of its divisors is an integer number (4078541527875).

Almost surely, 2^{8157083055749} is an apocalyptic number.

It is an amenable number.

8157083055749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8157083055749 is an equidigital number, since it uses as much as digits as its factorization.

8157083055749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 62.

The spelling of 8157083055749 in words is "eight trillion, one hundred fifty-seven billion, eighty-three million, fifty-five thousand, seven hundred forty-nine".