1601706656117 has 2 divisors, whose sum is σ = 1601706656118. Its totient is φ = 1601706656116.

The previous prime is 1601706656027. The next prime is 1601706656161. The reversal of 1601706656117 is 7116566071061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1040157254161 + 561549401956 = 1019881^2 + 749366^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601706656117 - 2³⁴ = 1584526786933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601706656167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800853328058 + 800853328059.

It is an arithmetic number, because the mean of its divisors is an integer number (800853328059).

Almost surely, 2^{1601706656117} is an apocalyptic number.

It is an amenable number.

1601706656117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601706656117 is an equidigital number, since it uses as much as digits as its factorization.

1601706656117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 1601706656117 in words is "one trillion, six hundred one billion, seven hundred six million, six hundred fifty-six thousand, one hundred seventeen".