68658033289 has 2 divisors, whose sum is σ = 68658033290. Its totient is φ = 68658033288.

The previous prime is 68658033287. The next prime is 68658033317. The reversal of 68658033289 is 98233085686.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46395006025 + 22263027264 = 215395^2 + 149208^2 .

It is a cyclic number.

It is not a de Polignac number, because 68658033289 - 2¹ = 68658033287 is a prime.

It is a super-2 number, since 2×68658033289² (a number of 22 digits) contains 22 as substring.

Together with 68658033287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68658033287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34329016644 + 34329016645.

It is an arithmetic number, because the mean of its divisors is an integer number (34329016645).

Almost surely, 2^68658033289 is an apocalyptic number.

It is an amenable number.

68658033289 is a deficient number, since it is larger than the sum of its proper divisors (1).

68658033289 is an equidigital number, since it uses as much as digits as its factorization.

68658033289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 68658033289 in words is "sixty-eight billion, six hundred fifty-eight million, thirty-three thousand, two hundred eighty-nine".