68551727528077 has 2 divisors, whose sum is σ = 68551727528078. Its totient is φ = 68551727528076.

The previous prime is 68551727528071. The next prime is 68551727528099. The reversal of 68551727528077 is 77082572715586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61351408605796 + 7200318922281 = 7832714^2 + 2683341^2 .

It is a cyclic number.

It is not a de Polignac number, because 68551727528077 - 2¹⁹ = 68551727003789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68551727527997 and 68551727528015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68551727528071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34275863764038 + 34275863764039.

It is an arithmetic number, because the mean of its divisors is an integer number (34275863764039).

Almost surely, 2^{68551727528077} is an apocalyptic number.

It is an amenable number.

68551727528077 is a deficient number, since it is larger than the sum of its proper divisors (1).

68551727528077 is an equidigital number, since it uses as much as digits as its factorization.

68551727528077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460992000, while the sum is 70.

The spelling of 68551727528077 in words is "sixty-eight trillion, five hundred fifty-one billion, seven hundred twenty-seven million, five hundred twenty-eight thousand, seventy-seven".