1601730143173 has 2 divisors, whose sum is σ = 1601730143174. Its totient is φ = 1601730143172.

The previous prime is 1601730143141. The next prime is 1601730143191. The reversal of 1601730143173 is 3713410371061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094185037089 + 507545106084 = 1046033^2 + 712422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601730143173 - 2⁵ = 1601730143141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601730143473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800865071586 + 800865071587.

It is an arithmetic number, because the mean of its divisors is an integer number (800865071587).

Almost surely, 2^{1601730143173} is an apocalyptic number.

It is an amenable number.

1601730143173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601730143173 is an equidigital number, since it uses as much as digits as its factorization.

1601730143173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 1601730143173 in words is "one trillion, six hundred one billion, seven hundred thirty million, one hundred forty-three thousand, one hundred seventy-three".