806309363173 has 2 divisors, whose sum is σ = 806309363174. Its totient is φ = 806309363172.

The previous prime is 806309363161. The next prime is 806309363191. The reversal of 806309363173 is 371363903608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806290855969 + 18507204 = 897937^2 + 4302^2 .

It is a cyclic number.

It is not a de Polignac number, because 806309363173 - 2²¹ = 806307266021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806309361173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403154681586 + 403154681587.

It is an arithmetic number, because the mean of its divisors is an integer number (403154681587).

Almost surely, 2^806309363173 is an apocalyptic number.

It is an amenable number.

806309363173 is a deficient number, since it is larger than the sum of its proper divisors (1).

806309363173 is an equidigital number, since it uses as much as digits as its factorization.

806309363173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 806309363173 in words is "eight hundred six billion, three hundred nine million, three hundred sixty-three thousand, one hundred seventy-three".