85143968113 has 2 divisors, whose sum is σ = 85143968114. Its totient is φ = 85143968112.

The previous prime is 85143968093. The next prime is 85143968137. The reversal of 85143968113 is 31186934158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62374063504 + 22769904609 = 249748^2 + 150897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85143968113 is a prime.

It is not a weakly prime, because it can be changed into another prime (85143968713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42571984056 + 42571984057.

It is an arithmetic number, because the mean of its divisors is an integer number (42571984057).

Almost surely, 2^85143968113 is an apocalyptic number.

It is an amenable number.

85143968113 is a deficient number, since it is larger than the sum of its proper divisors (1).

85143968113 is an equidigital number, since it uses as much as digits as its factorization.

85143968113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 85143968113 in words is "eighty-five billion, one hundred forty-three million, nine hundred sixty-eight thousand, one hundred thirteen".