68428844677 has 2 divisors, whose sum is σ = 68428844678. Its totient is φ = 68428844676.

The previous prime is 68428844591. The next prime is 68428844711. The reversal of 68428844677 is 77644882486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51299532036 + 17129312641 = 226494^2 + 130879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68428844677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68428844777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34214422338 + 34214422339.

It is an arithmetic number, because the mean of its divisors is an integer number (34214422339).

Almost surely, 2^68428844677 is an apocalyptic number.

It is an amenable number.

68428844677 is a deficient number, since it is larger than the sum of its proper divisors (1).

68428844677 is an equidigital number, since it uses as much as digits as its factorization.

68428844677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115605504, while the sum is 64.

The spelling of 68428844677 in words is "sixty-eight billion, four hundred twenty-eight million, eight hundred forty-four thousand, six hundred seventy-seven".