68770258781391 has 20 divisors (see below), whose sum is σ = 106044779773504. Its totient is φ = 44367908889600.

The previous prime is 68770258781353. The next prime is 68770258781423. The reversal of 68770258781391 is 19318785207786.

It is a happy number.

68770258781391 is a `hidden beast` number, since 6 + 8 + 7 + 7 + 0 + 2 + 587 + 8 + 1 + 39 + 1 = 666.

It is not a de Polignac number, because 68770258781391 - 2¹⁵ = 68770258748623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68770258781291) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13693796530 + ... + 13693801551.

Almost surely, 2^{68770258781391} is an apocalyptic number.

68770258781391 is a deficient number, since it is larger than the sum of its proper divisors (37274520992113).

68770258781391 is a wasteful number, since it uses less digits than its factorization.

68770258781391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27387598124 (or 27387598115 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 72.

The spelling of 68770258781391 in words is "sixty-eight trillion, seven hundred seventy billion, two hundred fifty-eight million, seven hundred eighty-one thousand, three hundred ninety-one".