68893182749 has 2 divisors, whose sum is σ = 68893182750. Its totient is φ = 68893182748.

The previous prime is 68893182643. The next prime is 68893182751. The reversal of 68893182749 is 94728139886.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60986772025 + 7906410724 = 246955^2 + 88918^2 .

It is a cyclic number.

It is not a de Polignac number, because 68893182749 - 2²⁰ = 68892134173 is a prime.

It is a super-2 number, since 2×68893182749² (a number of 22 digits) contains 22 as substring.

Together with 68893182751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68893187749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34446591374 + 34446591375.

It is an arithmetic number, because the mean of its divisors is an integer number (34446591375).

Almost surely, 2^68893182749 is an apocalyptic number.

It is an amenable number.

68893182749 is a deficient number, since it is larger than the sum of its proper divisors (1).

68893182749 is an equidigital number, since it uses as much as digits as its factorization.

68893182749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 65.

The spelling of 68893182749 in words is "sixty-eight billion, eight hundred ninety-three million, one hundred eighty-two thousand, seven hundred forty-nine".