68027816251 has 2 divisors, whose sum is σ = 68027816252. Its totient is φ = 68027816250.

The previous prime is 68027816203. The next prime is 68027816261. The reversal of 68027816251 is 15261872086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68027816251 - 2²⁷ = 67893598523 is a prime.

It is not a weakly prime, because it can be changed into another prime (68027816261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34013908125 + 34013908126.

It is an arithmetic number, because the mean of its divisors is an integer number (34013908126).

Almost surely, 2^68027816251 is an apocalyptic number.

68027816251 is a deficient number, since it is larger than the sum of its proper divisors (1).

68027816251 is an equidigital number, since it uses as much as digits as its factorization.

68027816251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 68027816251 in words is "sixty-eight billion, twenty-seven million, eight hundred sixteen thousand, two hundred fifty-one".