1712721110173 has 2 divisors, whose sum is σ = 1712721110174. Its totient is φ = 1712721110172.

The previous prime is 1712721110167. The next prime is 1712721110207. The reversal of 1712721110173 is 3710111272171.

It is an a-pointer prime, because the next prime (1712721110207) can be obtained adding 1712721110173 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1446338159044 + 266382951129 = 1202638^2 + 516123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1712721110173 - 2²⁹ = 1712184239261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1712721140173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 856360555086 + 856360555087.

It is an arithmetic number, because the mean of its divisors is an integer number (856360555087).

Almost surely, 2^{1712721110173} is an apocalyptic number.

It is an amenable number.

1712721110173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1712721110173 is an equidigital number, since it uses as much as digits as its factorization.

1712721110173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4116, while the sum is 34.

The spelling of 1712721110173 in words is "one trillion, seven hundred twelve billion, seven hundred twenty-one million, one hundred ten thousand, one hundred seventy-three".