1705640000173 has 2 divisors, whose sum is σ = 1705640000174. Its totient is φ = 1705640000172.

The previous prime is 1705640000153. The next prime is 1705640000191. The reversal of 1705640000173 is 3710000465071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309095240649 + 396544759524 = 1144157^2 + 629718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1705640000173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1705640000153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852820000086 + 852820000087.

It is an arithmetic number, because the mean of its divisors is an integer number (852820000087).

Almost surely, 2^{1705640000173} is an apocalyptic number.

It is an amenable number.

1705640000173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705640000173 is an equidigital number, since it uses as much as digits as its factorization.

1705640000173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 1705640000173 in words is "one trillion, seven hundred five billion, six hundred forty million, one hundred seventy-three", and thus it is an aban number.