171606140633 has 2 divisors, whose sum is σ = 171606140634. Its totient is φ = 171606140632.

The previous prime is 171606140623. The next prime is 171606140677. The reversal of 171606140633 is 336041606171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115184214544 + 56421926089 = 339388^2 + 237533^2 .

It is a cyclic number.

It is not a de Polignac number, because 171606140633 - 2²⁴ = 171589363417 is a prime.

It is not a weakly prime, because it can be changed into another prime (171606140623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85803070316 + 85803070317.

It is an arithmetic number, because the mean of its divisors is an integer number (85803070317).

Almost surely, 2^171606140633 is an apocalyptic number.

It is an amenable number.

171606140633 is a deficient number, since it is larger than the sum of its proper divisors (1).

171606140633 is an equidigital number, since it uses as much as digits as its factorization.

171606140633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 171606140633 in words is "one hundred seventy-one billion, six hundred six million, one hundred forty thousand, six hundred thirty-three".