68256071237 has 2 divisors, whose sum is σ = 68256071238. Its totient is φ = 68256071236.

The previous prime is 68256071231. The next prime is 68256071239. The reversal of 68256071237 is 73217065286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65471503876 + 2784567361 = 255874^2 + 52769^2 .

It is a cyclic number.

It is not a de Polignac number, because 68256071237 - 2⁶ = 68256071173 is a prime.

Together with 68256071239, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68256071191 and 68256071200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68256071231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34128035618 + 34128035619.

It is an arithmetic number, because the mean of its divisors is an integer number (34128035619).

Almost surely, 2^68256071237 is an apocalyptic number.

It is an amenable number.

68256071237 is a deficient number, since it is larger than the sum of its proper divisors (1).

68256071237 is an equidigital number, since it uses as much as digits as its factorization.

68256071237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 68256071237 in words is "sixty-eight billion, two hundred fifty-six million, seventy-one thousand, two hundred thirty-seven".