170894327081 has 2 divisors, whose sum is σ = 170894327082. Its totient is φ = 170894327080.

The previous prime is 170894327053. The next prime is 170894327113. The reversal of 170894327081 is 180723498071.

It is a happy number.

170894327081 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., 160567702681 + 10326624400 = 400709^2 + 101620^2 .

It is a cyclic number.

It is not a de Polignac number, because 170894327081 - 2³⁰ = 169820585257 is a prime.

It is a super-2 number, since 2×170894327081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170894327011) 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, 85447163540 + 85447163541.

It is an arithmetic number, because the mean of its divisors is an integer number (85447163541).

Almost surely, 2^170894327081 is an apocalyptic number.

It is an amenable number.

170894327081 is a deficient number, since it is larger than the sum of its proper divisors (1).

170894327081 is an equidigital number, since it uses as much as digits as its factorization.

170894327081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 170894327081 in words is "one hundred seventy billion, eight hundred ninety-four million, three hundred twenty-seven thousand, eighty-one".