161606000085583 has 2 divisors, whose sum is σ = 161606000085584. Its totient is φ = 161606000085582.

The previous prime is 161606000085581. The next prime is 161606000085671. The reversal of 161606000085583 is 385580000606161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161606000085583 - 2¹ = 161606000085581 is a prime.

It is a super-2 number, since 2×161606000085583² (a number of 29 digits) contains 22 as substring.

Together with 161606000085581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161606000085581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80803000042791 + 80803000042792.

It is an arithmetic number, because the mean of its divisors is an integer number (80803000042792).

Almost surely, 2^{161606000085583} is an apocalyptic number.

161606000085583 is a deficient number, since it is larger than the sum of its proper divisors (1).

161606000085583 is an equidigital number, since it uses as much as digits as its factorization.

161606000085583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 161606000085583 in words is "one hundred sixty-one trillion, six hundred six billion, eighty-five thousand, five hundred eighty-three".