34168999681 has 2 divisors, whose sum is σ = 34168999682. Its totient is φ = 34168999680.

The previous prime is 34168999661. The next prime is 34168999687. The reversal of 34168999681 is 18699986143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18295267600 + 15873732081 = 135260^2 + 125991^2 .

It is a cyclic number.

It is not a de Polignac number, because 34168999681 - 2⁹ = 34168999169 is a prime.

It is a super-2 number, since 2×34168999681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34168999687) 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, 17084499840 + 17084499841.

It is an arithmetic number, because the mean of its divisors is an integer number (17084499841).

Almost surely, 2^34168999681 is an apocalyptic number.

It is an amenable number.

34168999681 is a deficient number, since it is larger than the sum of its proper divisors (1).

34168999681 is an equidigital number, since it uses as much as digits as its factorization.

34168999681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 64.

The spelling of 34168999681 in words is "thirty-four billion, one hundred sixty-eight million, nine hundred ninety-nine thousand, six hundred eighty-one".