68249608805 has 16 divisors (see below), whose sum is σ = 95882379264. Its totient is φ = 45658273920.

The previous prime is 68249608733. The next prime is 68249608837. The reversal of 68249608805 is 50880694286.

It is not a de Polignac number, because 68249608805 - 2⁸ = 68249608549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23778917 + ... + 23781786.

It is an arithmetic number, because the mean of its divisors is an integer number (5992648704).

Almost surely, 2^68249608805 is an apocalyptic number.

It is an amenable number.

68249608805 is a deficient number, since it is larger than the sum of its proper divisors (27632770459).

68249608805 is a wasteful number, since it uses less digits than its factorization.

68249608805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47560756.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 68249608805 in words is "sixty-eight billion, two hundred forty-nine million, six hundred eight thousand, eight hundred five".