163089239081 has 2 divisors, whose sum is σ = 163089239082. Its totient is φ = 163089239080.

The previous prime is 163089239003. The next prime is 163089239083. The reversal of 163089239081 is 180932980361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88753943056 + 74335296025 = 297916^2 + 272645^2 .

It is a cyclic number.

It is not a de Polignac number, because 163089239081 - 2²² = 163085044777 is a prime.

It is a super-2 number, since 2×163089239081² (a number of 23 digits) contains 22 as substring.

Together with 163089239083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163089239083) 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, 81544619540 + 81544619541.

It is an arithmetic number, because the mean of its divisors is an integer number (81544619541).

Almost surely, 2^163089239081 is an apocalyptic number.

It is an amenable number.

163089239081 is a deficient number, since it is larger than the sum of its proper divisors (1).

163089239081 is an equidigital number, since it uses as much as digits as its factorization.

163089239081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 163089239081 in words is "one hundred sixty-three billion, eighty-nine million, two hundred thirty-nine thousand, eighty-one".