68889395297 has 2 divisors, whose sum is σ = 68889395298. Its totient is φ = 68889395296.

The previous prime is 68889395279. The next prime is 68889395401. The reversal of 68889395297 is 79259398886.

Together with previous prime (68889395279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43660520401 + 25228874896 = 208951^2 + 158836^2 .

It is a cyclic number.

It is not a de Polignac number, because 68889395297 - 2⁸ = 68889395041 is a prime.

It is not a weakly prime, because it can be changed into another prime (68889395207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34444697648 + 34444697649.

It is an arithmetic number, because the mean of its divisors is an integer number (34444697649).

Almost surely, 2^68889395297 is an apocalyptic number.

It is an amenable number.

68889395297 is a deficient number, since it is larger than the sum of its proper divisors (1).

68889395297 is an equidigital number, since it uses as much as digits as its factorization.

68889395297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 74.

The spelling of 68889395297 in words is "sixty-eight billion, eight hundred eighty-nine million, three hundred ninety-five thousand, two hundred ninety-seven".