161847682653593 has 2 divisors, whose sum is σ = 161847682653594. Its totient is φ = 161847682653592.

The previous prime is 161847682653541. The next prime is 161847682653689. The reversal of 161847682653593 is 395356286748161.

161847682653593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152189429634064 + 9658253019529 = 12336508^2 + 3107773^2 .

It is a cyclic number.

It is not a de Polignac number, because 161847682653593 - 2¹⁶ = 161847682588057 is a prime.

It is a super-4 number, since 4×161847682653593⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a self number, because there is not a number n which added to its sum of digits gives 161847682653593.

It is not a weakly prime, because it can be changed into another prime (161847682653523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80923841326796 + 80923841326797.

It is an arithmetic number, because the mean of its divisors is an integer number (80923841326797).

Almost surely, 2^{161847682653593} is an apocalyptic number.

It is an amenable number.

161847682653593 is a deficient number, since it is larger than the sum of its proper divisors (1).

161847682653593 is an equidigital number, since it uses as much as digits as its factorization.

161847682653593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1567641600, while the sum is 74.

The spelling of 161847682653593 in words is "one hundred sixty-one trillion, eight hundred forty-seven billion, six hundred eighty-two million, six hundred fifty-three thousand, five hundred ninety-three".