68320541251 has 2 divisors, whose sum is σ = 68320541252. Its totient is φ = 68320541250.

The previous prime is 68320541209. The next prime is 68320541309. The reversal of 68320541251 is 15214502386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68320541251 - 2²⁵ = 68286986819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68320541251.

It is not a weakly prime, because it can be changed into another prime (68320541351) 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, 34160270625 + 34160270626.

It is an arithmetic number, because the mean of its divisors is an integer number (34160270626).

Almost surely, 2^68320541251 is an apocalyptic number.

68320541251 is a deficient number, since it is larger than the sum of its proper divisors (1).

68320541251 is an equidigital number, since it uses as much as digits as its factorization.

68320541251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 68320541251 in words is "sixty-eight billion, three hundred twenty million, five hundred forty-one thousand, two hundred fifty-one".