268758758691 has 12 divisors (see below), whose sum is σ = 388211737368. Its totient is φ = 179170363584.

The previous prime is 268758758677. The next prime is 268758758701. The reversal of 268758758691 is 196857857862.

268758758691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 268758758691 - 2⁹ = 268758758179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268758759691) 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 in 11 ways as a sum of consecutive naturals, for example, 1091851 + ... + 1315163.

It is an arithmetic number, because the mean of its divisors is an integer number (32350978114).

Almost surely, 2^268758758691 is an apocalyptic number.

268758758691 is a deficient number, since it is larger than the sum of its proper divisors (119452978677).

268758758691 is a wasteful number, since it uses less digits than its factorization.

268758758691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357042 (or 357039 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 72.

The spelling of 268758758691 in words is "two hundred sixty-eight billion, seven hundred fifty-eight million, seven hundred fifty-eight thousand, six hundred ninety-one".