34163646581 has 2 divisors, whose sum is σ = 34163646582. Its totient is φ = 34163646580.

The previous prime is 34163646553. The next prime is 34163646613. The reversal of 34163646581 is 18564636143.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32064632356 + 2099014225 = 179066^2 + 45815^2 .

It is a cyclic number.

It is not a de Polignac number, because 34163646581 - 2¹⁰ = 34163645557 is a prime.

It is a super-2 number, since 2×34163646581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34163646281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17081823290 + 17081823291.

It is an arithmetic number, because the mean of its divisors is an integer number (17081823291).

Almost surely, 2^34163646581 is an apocalyptic number.

It is an amenable number.

34163646581 is a deficient number, since it is larger than the sum of its proper divisors (1).

34163646581 is an equidigital number, since it uses as much as digits as its factorization.

34163646581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 47.

The spelling of 34163646581 in words is "thirty-four billion, one hundred sixty-three million, six hundred forty-six thousand, five hundred eighty-one".