171606462593 has 2 divisors, whose sum is σ = 171606462594. Its totient is φ = 171606462592.

The previous prime is 171606462569. The next prime is 171606462623. The reversal of 171606462593 is 395264606171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117386408689 + 54220053904 = 342617^2 + 232852^2 .

It is a cyclic number.

It is not a de Polignac number, because 171606462593 - 2¹⁸ = 171606200449 is a prime.

It is not a weakly prime, because it can be changed into another prime (171606462553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85803231296 + 85803231297.

It is an arithmetic number, because the mean of its divisors is an integer number (85803231297).

Almost surely, 2^171606462593 is an apocalyptic number.

It is an amenable number.

171606462593 is a deficient number, since it is larger than the sum of its proper divisors (1).

171606462593 is an equidigital number, since it uses as much as digits as its factorization.

171606462593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 171606462593 in words is "one hundred seventy-one billion, six hundred six million, four hundred sixty-two thousand, five hundred ninety-three".