68537592089 has 2 divisors, whose sum is σ = 68537592090. Its totient is φ = 68537592088.

The previous prime is 68537592073. The next prime is 68537592143. The reversal of 68537592089 is 98029573586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44983016464 + 23554575625 = 212092^2 + 153475^2 .

It is a cyclic number.

It is not a de Polignac number, because 68537592089 - 2⁴ = 68537592073 is a prime.

It is not a weakly prime, because it can be changed into another prime (68537592029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34268796044 + 34268796045.

It is an arithmetic number, because the mean of its divisors is an integer number (34268796045).

Almost surely, 2^68537592089 is an apocalyptic number.

It is an amenable number.

68537592089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68537592089 is an equidigital number, since it uses as much as digits as its factorization.

68537592089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 68537592089 in words is "sixty-eight billion, five hundred thirty-seven million, five hundred ninety-two thousand, eighty-nine".