85010702173 has 2 divisors, whose sum is σ = 85010702174. Its totient is φ = 85010702172.

The previous prime is 85010702159. The next prime is 85010702219. The reversal of 85010702173 is 37120701058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84831222564 + 179479609 = 291258^2 + 13397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85010702173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85010706173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42505351086 + 42505351087.

It is an arithmetic number, because the mean of its divisors is an integer number (42505351087).

Almost surely, 2^85010702173 is an apocalyptic number.

It is an amenable number.

85010702173 is a deficient number, since it is larger than the sum of its proper divisors (1).

85010702173 is an equidigital number, since it uses as much as digits as its factorization.

85010702173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 85010702173 in words is "eighty-five billion, ten million, seven hundred two thousand, one hundred seventy-three".