8645151857 has 2 divisors, whose sum is σ = 8645151858. Its totient is φ = 8645151856.

The previous prime is 8645151817. The next prime is 8645151871. The reversal of 8645151857 is 7581515468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6726624256 + 1918527601 = 82016^2 + 43801^2 .

It is a cyclic number.

It is not a de Polignac number, because 8645151857 - 2¹² = 8645147761 is a prime.

It is not a weakly prime, because it can be changed into another prime (8645151817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322575928 + 4322575929.

It is an arithmetic number, because the mean of its divisors is an integer number (4322575929).

Almost surely, 2^8645151857 is an apocalyptic number.

It is an amenable number.

8645151857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645151857 is an equidigital number, since it uses as much as digits as its factorization.

8645151857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344000, while the sum is 50.

The square root of 8645151857 is about 92979.3087573789. The cubic root of 8645151857 is about 2052.3789045836.

The spelling of 8645151857 in words is "eight billion, six hundred forty-five million, one hundred fifty-one thousand, eight hundred fifty-seven".