85013967917 has 2 divisors, whose sum is σ = 85013967918. Its totient is φ = 85013967916.

The previous prime is 85013967901. The next prime is 85013967959. The reversal of 85013967917 is 71976931058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52517055556 + 32496912361 = 229166^2 + 180269^2 .

It is a cyclic number.

It is not a de Polignac number, because 85013967917 - 2⁴ = 85013967901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85013967967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42506983958 + 42506983959.

It is an arithmetic number, because the mean of its divisors is an integer number (42506983959).

Almost surely, 2^85013967917 is an apocalyptic number.

It is an amenable number.

85013967917 is a deficient number, since it is larger than the sum of its proper divisors (1).

85013967917 is an equidigital number, since it uses as much as digits as its factorization.

85013967917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 85013967917 in words is "eighty-five billion, thirteen million, nine hundred sixty-seven thousand, nine hundred seventeen".