68028360677 has 2 divisors, whose sum is σ = 68028360678. Its totient is φ = 68028360676.

The previous prime is 68028360581. The next prime is 68028360679. The reversal of 68028360677 is 77606382086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67974396961 + 53963716 = 260719^2 + 7346^2 .

It is a cyclic number.

It is not a de Polignac number, because 68028360677 - 2¹⁶ = 68028295141 is a prime.

Together with 68028360679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68028360679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34014180338 + 34014180339.

It is an arithmetic number, because the mean of its divisors is an integer number (34014180339).

Almost surely, 2^68028360677 is an apocalyptic number.

It is an amenable number.

68028360677 is a deficient number, since it is larger than the sum of its proper divisors (1).

68028360677 is an equidigital number, since it uses as much as digits as its factorization.

68028360677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 68028360677 in words is "sixty-eight billion, twenty-eight million, three hundred sixty thousand, six hundred seventy-seven".