68268581755 has 12 divisors (see below), whose sum is σ = 90046824336. Its totient is φ = 49649877200.

The previous prime is 68268581753. The next prime is 68268581809. The reversal of 68268581755 is 55718586286.

It is not a de Polignac number, because 68268581755 - 2¹ = 68268581753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68268581693 and 68268581702.

It is not an unprimeable number, because it can be changed into a prime (68268581753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56419711 + ... + 56420920.

It is an arithmetic number, because the mean of its divisors is an integer number (7503902028).

Almost surely, 2^68268581755 is an apocalyptic number.

68268581755 is a deficient number, since it is larger than the sum of its proper divisors (21778242581).

68268581755 is a wasteful number, since it uses less digits than its factorization.

68268581755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112840658 (or 112840647 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 61.

The spelling of 68268581755 in words is "sixty-eight billion, two hundred sixty-eight million, five hundred eighty-one thousand, seven hundred fifty-five".