85171363373 has 2 divisors, whose sum is σ = 85171363374. Its totient is φ = 85171363372.

The previous prime is 85171363369. The next prime is 85171363471. The reversal of 85171363373 is 37336317158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71919439684 + 13251923689 = 268178^2 + 115117^2 .

It is a cyclic number.

It is not a de Polignac number, because 85171363373 - 2² = 85171363369 is a prime.

It is a super-2 number, since 2×85171363373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85171363313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42585681686 + 42585681687.

It is an arithmetic number, because the mean of its divisors is an integer number (42585681687).

Almost surely, 2^85171363373 is an apocalyptic number.

It is an amenable number.

85171363373 is a deficient number, since it is larger than the sum of its proper divisors (1).

85171363373 is an equidigital number, since it uses as much as digits as its factorization.

85171363373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The spelling of 85171363373 in words is "eighty-five billion, one hundred seventy-one million, three hundred sixty-three thousand, three hundred seventy-three".